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Egypt cancels DST permanently
by Paul Eggert April 24, 2015

April 24, 2015

Yesterday the office of Egyptian President El-Sisi announced his decision to abandon DST permanently. This increases the likelihood of the correctness of our guess in 2015d for no DST in Africa/Cairo after 2015. Although the proposed patch (attached) was too late to make the cutoff for 2015d, it affects only commentary.

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[tz-announce] 2015d release of tz code and data available
by Paul Eggert April 24, 2015

April 24, 2015

The 2015d release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Changes affecting future time stamps Egypt will not observe DST in 2015 and will consider canceling it permanently. For now, assume no DST indefinitely. (Thanks to Ahmed Nazmy and Tim Parenti.) Changes affecting past time stamps America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not 1966-07-01. Also, Yukon's time zone history is documented better. (Thanks to Brian Inglis and Dennis Ferguson.) Change affecting past and future time zone abbreviations The abbreviations for Hawaii-Aleutian standard and daylight times have been changed from HAST/HADT to HST/HDT, as per US Government Printing Office style. This affects only America/Adak since 1983, as America/Honolulu was already using the new style. Changes affecting code zic has some minor performance improvements. Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2015d.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2015d.tar.gz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2015d.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2015d.tar.gz As usual, links to the latest release files are here: http://www.iana.org/time-zones/repository/tzcode-latest.tar.gz http://www.iana.org/time-zones/repository/tzdata-latest.tar.gz ftp://ftp.iana.org/tz/tzcode-latest.tar.gz ftp://ftp.iana.org/tz/tzdata-latest.tar.gz Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 6b36adfdd6baf6e4724bf19fcb090a43722a2522 dated Fri Apr 24 08:09:46 2015 -0700 and tagged '2015d' in the experimental github repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 2cb4faced839d02e6313a7aacca4d2dfe6454186d9864ee4aa034f7280442e6a751cec2285bde2d5712962b733e107a46f2282469f6510b42d93972d6c34424a tzcode2015d.tar.gz 37b5aa3c5e0d601c8b20fac08d7267c398a836e4190ef85625d5e86a806ba1baceb2315ba81a9a6c854eae4fce40e9c8f90cf5adade3f48ad443f77c221d8983 tzdata2015d.tar.gz Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVOl3RAAoJEO2X6Q5iqn40BtMP/1opNPVcTRK/GFw7wQXpegzS mGM4R1LXua2txG1P8gEkeNHimRqeDWixI/crg4sOoKAb10wvkf70lAI3cVRCMHS+ F4zL3JQJktj/LXBJGmNOwonTdz0mBQASF7DnxX8mL+/QpyKZSy4pTRQDIBKhzlKM PuIpVT6HYXLzi+L2jim2W3EU/7Ja0pOB0pFJNGoJ2SGhja2jvj3Ae3hzfsyXbcQI kQ4Eo7k6hCu0FP7YtGg8D2CqGvXTrErUNI8gTIvT2mV8aDy9j6SbAl0XrTz1UASU lrzwQ/GgGhLeYFMriCCo5zf+H8pjm4+N4JniEf30lIB06CGspQg3ZhchdrexHfWM j+exPhzadR+qQMEdQ95oiY/J5u4N1ykE9WGdianFUlINklCqejImYYKAzMWzFQSs GACVxBp9WWZ1VEAU3eag6TyVKJGiQMtpaGolpVnCaU1JTcFAxpFmOZ55BosS8J/w c+cqke7zTtFfaPJhuylSOca95lAEd14HP+nAFxvGwIhX8z3FbM8pRlOW+rV2wIYH UUAPrSKu+QFTvOl1+TnrydE9cHjbmDC2Vknz1SGel7e2USXTEB4UvgzVyr5E7qf6 ckKB7l6LRIfIXlJSojcF06P2Xz4UJlIbzwA1oXpaK7g9H4YZMGDqIB5HhBRVZx6p KG2eiGYTmCnJt3Gk6SY2 =cvHz -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVOl3RAAoJEO2X6Q5iqn401YgP/igT318zjaLcBATJ2pQ7aMj1 WrtkZ+m/Urt5pkgtNxtx608eXKTZbs5g9YeJHFS3eN74y8JIrTfNaBiPWNeG0x8m nc83Jvs++B9A8JFjAAjhZVl2TbGTpD5r9FGqQXmIX4qKsB5W1b+OGW3OtXM9vNGK ZVC6TEp/wEuqt3dmjhirLihmdj1W/+2aowlm7PAPhJY9R3QdYJ2dRh8WRvGRSxtc EIorFKgfNOWJJnKCk+YPeK4xPxivNw43nYAy6UnavJYPjTpHxaAx47533R7nm6Cy b2JMdpQSRv4TZrnfz0OzXV/qhJskZNxgf6LR0/3uMSzX1VBO1Wywpmg2wIuij5qo POG8dJr+TsVL3O539DTQ1nYqV0kCzfWirTML9ipF/jwEeG/EFBjkNM6g5eyJLrZp 7Ej4dTbiqmde/Ajh5ECW4AdNQqTaR35BBLtj2PR415dBGhiFMxR30TyX16rbGVWX Mb5abkkS1v4NxLtvi5mtJJl5JNLrYEW/nOqwrIeEEBY2BvvZdeJVqHlXWeBoY9P+ vSQoN9/gCFSQd5olmVVnuP+mqwzyipG8UUsyr7IAyeRc4bRPRyHkC8FdXy+lmrfP HJaPVcPDm6ZFW7BAFw/fqJC6DJj7I48qzKnHb7O9qtkzXjL+wW8kR6SidxANcMa/ 6lJlIHLlXKjj57lVsQHt =zE0V -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

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Egypt 30th Aug DST cancellation
by Mohamed Raouf, Vodafone Egypt April 24, 2015

April 24, 2015

Dear Sirs, On behalf of Vodafone Egypt, I'm writing to inquire about DST package to cancel time change for year 2015 in Egypt. Due to some political decisions, Egyptian government decided to cancel DST that was planned on 30th of April 2015. It is needed to have and updated java package tzdata2015 that is developed by IANA. Below is an official confirmation that DST will be canceled for this year http://www.timeanddate.com/time/change/egypt/cairo Yousry Sincerely, [Description: Description: cid:image001.png@01CEE047.637D02C0]<http://www.vodafone.com.eg/> Mohamed Raouf Charging Services Support Senior Engineer Charging, Mediation & IN Technology Department Vodafone Egypt Mobile: +201002005333 Email: mohamed.raouf(a)vodafone.com<mailto:mohamed.raouf@vodafone.com> Vodafone Egypt, Smart Village : Vodafone C3 Building, Cairo/Alex. Desert Road KM 28- 6th of October City, Egypt ************************************************************************************************************************* The content of this document is classified as Vodafone Egypt S.A.E. Confidential and Proprietary Information. The recipient hereby is committed to hold in strict confidence the contents of this (e-mail, document, information) and not to disclose to any third party without the prior written consent of Vodafone Egypt S.A.E. Recipient will be held liable for any unauthorized disclosure. If you have received this message in error, please notify the sender by return e-mail and delete the message in its entirety, including any attachments. http://www.vodafone.com.eg *************************************************************************************************************************

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Egypt Daylight Savings Canceled
by Ahmed Mekawy April 24, 2015

April 24, 2015

Good day, Is there a plan please to release a new time zone package reflecting the cancelation of Egypt daylight savings ? Thanks, Ahmed -- HYPERLINK "http://www.oracle.com/us/support/best-practices/overview/index.html"cid:part1.09080109.00060709@oracle.com HYPERLINK "http://www.oracle.com/" \nOracle Ahmed Mekawy | Principal Technical Account Manager Phone: HYPERLINK "tel:+971%2043%20909%20356"+202 3535 0211 | Mobile: HYPERLINK "tel:+971%2043%20909%20356"+2 01060064214 Oracle Global Systems Support ORACLE Egypt | 2 ElHegaz St., CEDARE Building | 11737 Cairo HYPERLINK "http://www.oracle.com/commitment" \nGreen OracleOracle is committed to developing practices and products that help protect the environment

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No DST in 2015 at Egypt
by Oleg Alistratov April 24, 2015

April 24, 2015

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Re: [tz] No DST in Egypt in 2015
by Amr Misbah April 21, 2015

April 21, 2015

The news from the site of the Egyptian Cabinet of Ministers:http://www.cabinet.gov.eg/Media/NewsDetails.aspx?id=15326 Decision #4, in Arabic:4. وافق مجلس الوزراء، في إجتماعه الأسبوعي اليوم، برئاسة المهندس إبراهيم محلب، رئيس مجلس الوزراء، على إرجاء العمل بالقرار بقانون الخاص بتطبيق التوقيت الصيفي هذا العام، مع إجراء التعديل اللازم على القرار بقانون، بالإضافة إلى تكليف الوزراء المعنيين بإعداد دراسة علمية متكاملة لجدوى الإستمرار في تطبيقه من عدمه في الأعوام القادمة. The English translation is expected to be available soon by clicking "English" at the top of the same page. On Tuesday, 21 April 2015, 10:53, Amr Misbah <amr_misbah(a)yahoo.com> wrote: Hello All, Please note that the Egyptian authorities have decided not to apply DST in 2015:http://www.timeanddate.com/news/time/egypt-cancels-dst-2015.html http://english.ahram.org.eg/NewsContent/1/64/128195/Egypt/Politics-/No-dayl… Best Regards,Amr

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No DST in Egypt in 2015
by Amr Misbah April 21, 2015

April 21, 2015

Hello All, Please note that the Egyptian authorities have decided not to apply DST in 2015:http://www.timeanddate.com/news/time/egypt-cancels-dst-2015.html http://english.ahram.org.eg/NewsContent/1/64/128195/Egypt/Politics-/No-dayl… Best Regards,Amr

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Egypt DST cancelled at least for 2015
by Ahmed Nazmy April 21, 2015

April 21, 2015

Hello , Egypt's ministers cabinet just announced today 20/Apr/2015 that it will cancel DST at least for 2015 . Hence changes that was recently done for DST change on 30th April and on Ramadan needs to be changed again to introduce NO DST changes for Egypt .

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Egypt Timezone Change
by Ahmed Mekawy April 20, 2015

April 20, 2015

Hello, It seems Egypt decided to cancel the daylight savings this year. http://english.ahram.org.eg/News/128195.aspx Thanks, Ahmed -- HYPERLINK "http://www.oracle.com/us/support/best-practices/overview/index.html"cid:part1.09080109.00060709@oracle.com HYPERLINK "http://www.oracle.com/" \nOracle Ahmed Mekawy | Principal Technical Account Manager Phone: HYPERLINK "tel:+971%2043%20909%20356"+202 3535 0211 | Mobile: HYPERLINK "tel:+971%2043%20909%20356"+2 01060064214 Oracle Global Systems Support ORACLE Egypt | 2 ElHegaz St., CEDARE Building | 11737 Cairo HYPERLINK "http://www.oracle.com/commitment" \nGreen OracleOracle is committed to developing practices and products that help protect the environment

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[PROPOSED PATCH 1/3] Remove need for ialloc.c
by Paul Eggert April 20, 2015

April 20, 2015

One of its functions, icpyalloc, duplicates the now-standard function strdup, and we might as well use the standard function. Its other function, icatalloc, is used only in O(N**2) algorithms that can be rewritten to be O(N). * Makefile: Mention HAVE_STRDUP in commentary. (TZCOBJS): Remove ialloc.o. (NONLIBSRCS): Remove ialloc.c. (ialloc.o): Remove. * ialloc.c: Remove. * private.h (HAVE_STRDUP): New macro, defaulting to 1. (icatalloc, icpyalloc): Remove decls. * zic.c (end): Remove. (strdup) [!HAVE_STRDUP]: New function. (memcheck): Arg is no longer a const pointer, since the result isn't. (emalloc, erealloc, ecpyalloc): Now functions, not macros. (ecpyalloc): Use strdup, not icpyalloc. (ecatalloc): Remove. All callers changed. (componentcheck): Check that file name components are nonempty; otherwise, relname might return nonsense. (relname): New function. (dolink, itsdir, writezone): Use it. (dolink, stringrule, stringzone): Rewrite to avoid O(N**2) algorithm involving 'strcat' and 'end'. (writezone): Use local, not static, to store fullname, and free it before returning. (doabbr, stringoffset): Return strlen of result. --- Makefile | 6 +-- ialloc.c | 32 ------------ private.h | 6 ++- zic.c | 175 +++++++++++++++++++++++++++++++++++++------------------------- 4 files changed, 113 insertions(+), 106 deletions(-) delete mode 100644 ialloc.c diff --git a/Makefile b/Makefile index 9a571e5..af52b36 100644 --- a/Makefile +++ b/Makefile @@ -120,6 +120,7 @@ LDLIBS= # -DHAVE_STDINT_H=1 if you have a pre-C99 compiler with "stdint.h" # -DHAVE_STRFTIME_L=1 if <time.h> declares locale_t and strftime_l # This defaults to 0 if _POSIX_VERSION < 200809, 1 otherwise. +# -DHAVE_STRDUP=0 if your system lacks the strdup function # -DHAVE_SYMLINK=0 if your system lacks the symlink function # -DHAVE_SYS_STAT_H=0 if your compiler lacks a "sys/stat.h" # -DHAVE_SYS_WAIT_H=0 if your compiler lacks a "sys/wait.h" @@ -330,13 +331,13 @@ AR= ar # ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib. RANLIB= : -TZCOBJS= zic.o scheck.o ialloc.o +TZCOBJS= zic.o scheck.o TZDOBJS= zdump.o localtime.o asctime.o DATEOBJS= date.o localtime.o strftime.o asctime.o LIBSRCS= localtime.c asctime.c difftime.c LIBOBJS= localtime.o asctime.o difftime.o HEADERS= tzfile.h private.h -NONLIBSRCS= zic.c zdump.c scheck.c ialloc.c +NONLIBSRCS= zic.c zdump.c scheck.c NEWUCBSRCS= date.c strftime.c SOURCES= $(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \ tzselect.ksh workman.sh @@ -654,7 +655,6 @@ zonenames: $(TDATA) asctime.o: private.h tzfile.h date.o: private.h difftime.o: private.h -ialloc.o: private.h localtime.o: private.h tzfile.h scheck.o: private.h strftime.o: private.h tzfile.h diff --git a/ialloc.c b/ialloc.c deleted file mode 100644 index e228db5..0000000 --- a/ialloc.c +++ /dev/null @@ -1,32 +0,0 @@ -/* -** This file is in the public domain, so clarified as of -** 2006-07-17 by Arthur David Olson. -*/ - -/*LINTLIBRARY*/ - -#include "private.h" - -char * -icatalloc(char *const old, const char *const new) -{ - register char * result; - register int oldsize, newsize; - - newsize = (new == NULL) ? 0 : strlen(new); - if (old == NULL) - oldsize = 0; - else if (newsize == 0) - return old; - else oldsize = strlen(old); - if ((result = realloc(old, oldsize + newsize + 1)) != NULL) - if (new != NULL) - strcpy(result + oldsize, new); - return result; -} - -char * -icpyalloc(const char *const string) -{ - return icatalloc(NULL, string); -} diff --git a/private.h b/private.h index de9c13e..05316a1 100644 --- a/private.h +++ b/private.h @@ -42,6 +42,10 @@ #define HAVE_SETTIMEOFDAY 3 #endif /* !defined HAVE_SETTIMEOFDAY */ +#ifndef HAVE_STRDUP +#define HAVE_STRDUP 1 +#endif + #ifndef HAVE_SYMLINK #define HAVE_SYMLINK 1 #endif /* !defined HAVE_SYMLINK */ @@ -452,8 +456,6 @@ time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE; ** Private function declarations. */ -char * icatalloc(char * old, const char * new); -char * icpyalloc(const char * string); const char * scheck(const char * string, const char * format); /* diff --git a/zic.c b/zic.c index 5d0501d..b28d5c3 100644 --- a/zic.c +++ b/zic.c @@ -31,8 +31,6 @@ typedef int_fast64_t zic_t; #define MKDIR_UMASK 0755 #endif -#define end(cp) (strchr((cp), '\0')) - struct rule { const char * r_filename; int r_linenum; @@ -368,18 +366,40 @@ size_product(size_t nitems, size_t itemsize) return nitems * itemsize; } +#if !HAVE_STRDUP +static char * +strdup(char const *str) +{ + char *result = malloc(strlen(str) + 1); + return result ? strcpy(result, str) : result; +} +#endif + static ATTRIBUTE_PURE void * -memcheck(void *const ptr) +memcheck(void *ptr) { if (ptr == NULL) memory_exhausted(strerror(errno)); return ptr; } -#define emalloc(size) memcheck(malloc(size)) -#define erealloc(ptr, size) memcheck(realloc(ptr, size)) -#define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) -#define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) +static void * +emalloc(size_t size) +{ + return memcheck(malloc(size)); +} + +static void * +erealloc(void *ptr, size_t size) +{ + return memcheck(realloc(ptr, size)); +} + +static char * +ecpyalloc (char const *str) +{ + return memcheck(strdup(str)); +} static void * growalloc(void *ptr, size_t itemsize, int nitems, int *nitems_alloc) @@ -634,6 +654,11 @@ componentcheck(char const *name, char const *component, { enum { component_len_max = 14 }; size_t component_len = component_end - component; + if (component_len == 0) { + fprintf(stderr, _("%s: file name '%s' contains empty component"), + progname, name); + exit(EXIT_FAILURE); + } if (0 < component_len && component_len <= 2 && component[0] == '.' && component_end[-1] == '.') { fprintf(stderr, _("%s: file name '%s' contains" @@ -686,6 +711,21 @@ namecheck(const char *name) componentcheck(name, component, cp); } +static char * +relname(char const *dir, char const *base) +{ + if (*base == '/') + return ecpyalloc(base); + else { + size_t dir_len = strlen(dir); + bool needs_slash = dir_len && dir[dir_len - 1] != '/'; + char *result = emalloc(dir_len + needs_slash + strlen(base) + 1); + result[dir_len] = '/'; + strcpy(result + dir_len + needs_slash, base); + return memcpy(result, dir, dir_len); + } +} + static void dolink(const char *const fromfield, const char *const tofield) { @@ -694,20 +734,8 @@ dolink(const char *const fromfield, const char *const tofield) register int fromisdir; namecheck(tofield); - if (fromfield[0] == '/') - fromname = ecpyalloc(fromfield); - else { - fromname = ecpyalloc(directory); - fromname = ecatalloc(fromname, "/"); - fromname = ecatalloc(fromname, fromfield); - } - if (tofield[0] == '/') - toname = ecpyalloc(tofield); - else { - toname = ecpyalloc(directory); - toname = ecatalloc(toname, "/"); - toname = ecatalloc(toname, tofield); - } + fromname = relname(directory, fromfield); + toname = relname(directory, tofield); /* ** We get to be careful here since ** there's a fair chance of root running us. @@ -731,6 +759,8 @@ dolink(const char *const fromfield, const char *const tofield) if (result != 0) { const char *s = fromfield; const char *t; + char *p; + size_t dotdots = 0; register char * symlinkcontents = NULL; do @@ -739,13 +769,13 @@ dolink(const char *const fromfield, const char *const tofield) && ! strncmp (fromfield, tofield, ++s - fromfield)); - for (s = tofield + (t - fromfield); - (s = strchr(s, '/')); - s++) - symlinkcontents = - ecatalloc(symlinkcontents, - "../"); - symlinkcontents = ecatalloc(symlinkcontents, t); + for (s = tofield + (t - fromfield); *s; s++) + dotdots += *s == '/'; + symlinkcontents + = emalloc(3 * dotdots + strlen(t) + 1); + for (p = symlinkcontents; dotdots-- != 0; p += 3) + memcpy(p, "../", 3); + strcpy(p, t); result = symlink(symlinkcontents, toname); if (result == 0) warning(_("hard link failed, symbolic link used")); @@ -828,7 +858,7 @@ itsdir(const char *const name) return S_ISDIR(st.st_mode) != 0; #else { - char *nameslashdot = ecatalloc(ecpyalloc(name), "/."); + char *nameslashdot = relname(name, "."); res = stat(nameslashdot, &st); free(nameslashdot); return res == 0; @@ -1547,7 +1577,7 @@ writezone(const char *const name, const char *const string, char version) register int leapcnt32, leapi32; register int timecnt32, timei32; register int pass; - static char * fullname; + char * fullname; static const struct tzhead tzh0; static struct tzhead tzh; zic_t *ats = emalloc(size_product(timecnt, sizeof *ats + 1)); @@ -1633,9 +1663,7 @@ writezone(const char *const name, const char *const string, char version) --leapcnt32; ++leapi32; } - fullname = erealloc(fullname, - strlen(directory) + 1 + strlen(name) + 1); - sprintf(fullname, "%s/%s", directory, name); + fullname = relname(directory, name); /* ** Remove old file, if any, to snap links. */ @@ -1850,15 +1878,16 @@ writezone(const char *const name, const char *const string, char version) fprintf(fp, "\n%s\n", string); close_file(fp, fullname); free(ats); + free(fullname); } -static void +static size_t doabbr(char *const abbr, const char *const format, const char *const letters, bool isdst, bool doquotes) { register char * cp; register char * slashp; - register int len; + register size_t len; slashp = strchr(format, '/'); if (slashp == NULL) { @@ -1871,18 +1900,18 @@ doabbr(char *const abbr, const char *const format, const char *const letters, memcpy(abbr, format, slashp - format); abbr[slashp - format] = '\0'; } + len = strlen(abbr); if (!doquotes) - return; + return len; for (cp = abbr; is_alpha(*cp); cp++) continue; - len = strlen(abbr); if (len > 0 && *cp == '\0') - return; + return len; abbr[len + 2] = '\0'; abbr[len + 1] = '>'; - for ( ; len > 0; --len) - abbr[len] = abbr[len - 1]; + memmove(abbr + 1, abbr, len); abbr[0] = '<'; + return len + 2; } static void @@ -1894,17 +1923,18 @@ updateminmax(const zic_t x) max_year = x; } -static bool +static int stringoffset(char *result, zic_t offset) { register int hours; register int minutes; register int seconds; + bool negative = offset < 0; + int len = negative; - result[0] = '\0'; - if (offset < 0) { - strcpy(result, "-"); + if (negative) { offset = -offset; + result[0] = '-'; } seconds = offset % SECSPERMIN; offset /= SECSPERMIN; @@ -1913,15 +1943,15 @@ stringoffset(char *result, zic_t offset) hours = offset; if (hours >= HOURSPERDAY * DAYSPERWEEK) { result[0] = '\0'; - return false; + return 0; } - sprintf(end(result), "%d", hours); + len += sprintf(result + len, "%d", hours); if (minutes != 0 || seconds != 0) { - sprintf(end(result), ":%02d", minutes); + len += sprintf(result + len, ":%02d", minutes); if (seconds != 0) - sprintf(end(result), ":%02d", seconds); + len += sprintf(result + len, ":%02d", seconds); } - return true; + return len; } static int @@ -1931,7 +1961,6 @@ stringrule(char *result, const struct rule *const rp, const zic_t dstoff, register zic_t tod = rp->r_tod; register int compat = 0; - result = end(result); if (rp->r_dycode == DC_DOM) { register int month, total; @@ -1942,9 +1971,9 @@ stringrule(char *result, const struct rule *const rp, const zic_t dstoff, total += len_months[0][month]; /* Omit the "J" in Jan and Feb, as that's shorter. */ if (rp->r_month <= 1) - sprintf(result, "%d", total + rp->r_dayofmonth - 1); + result += sprintf(result, "%d", total + rp->r_dayofmonth - 1); else - sprintf(result, "J%d", total + rp->r_dayofmonth); + result += sprintf(result, "J%d", total + rp->r_dayofmonth); } else { register int week; register int wday = rp->r_wday; @@ -1971,16 +2000,16 @@ stringrule(char *result, const struct rule *const rp, const zic_t dstoff, } else return -1; /* "cannot happen" */ if (wday < 0) wday += DAYSPERWEEK; - sprintf(result, "M%d.%d.%d", - rp->r_month + 1, week, wday); + result += sprintf(result, "M%d.%d.%d", + rp->r_month + 1, week, wday); } if (rp->r_todisgmt) tod += gmtoff; if (rp->r_todisstd && rp->r_stdoff == 0) tod += dstoff; if (tod != 2 * SECSPERMIN * MINSPERHOUR) { - strcat(result, "/"); - if (! stringoffset(end(result), tod)) + *result++ = '/'; + if (! stringoffset(result, tod)) return -1; if (tod < 0) { if (compat < 2013) @@ -2020,6 +2049,8 @@ stringzone(char *result, const struct zone *const zpfirst, const int zonecount) register const char * abbrvar; register int compat = 0; register int c; + size_t len; + int offsetlen; struct rule stdr, dstr; result[0] = '\0'; @@ -2087,30 +2118,36 @@ stringzone(char *result, const struct zone *const zpfirst, const int zonecount) if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0)) return -1; abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar; - doabbr(result, zp->z_format, abbrvar, false, true); - if (! stringoffset(end(result), -zp->z_gmtoff)) { + len = doabbr(result, zp->z_format, abbrvar, false, true); + offsetlen = stringoffset(result + len, -zp->z_gmtoff); + if (! offsetlen) { result[0] = '\0'; return -1; } + len += offsetlen; if (dstrp == NULL) return compat; - doabbr(end(result), zp->z_format, dstrp->r_abbrvar, true, true); - if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR) - if (! stringoffset(end(result), - -(zp->z_gmtoff + dstrp->r_stdoff))) { - result[0] = '\0'; - return -1; - } - strcat(result, ","); - c = stringrule(result, dstrp, dstrp->r_stdoff, zp->z_gmtoff); + len += doabbr(result + len, zp->z_format, dstrp->r_abbrvar, true, true); + if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR) { + offsetlen = stringoffset(result + len, + -(zp->z_gmtoff + dstrp->r_stdoff)); + if (! offsetlen) { + result[0] = '\0'; + return -1; + } + len += offsetlen; + } + result[len++] = ','; + c = stringrule(result + len, dstrp, dstrp->r_stdoff, zp->z_gmtoff); if (c < 0) { result[0] = '\0'; return -1; } if (compat < c) compat = c; - strcat(result, ","); - c = stringrule(result, stdrp, dstrp->r_stdoff, zp->z_gmtoff); + len += strlen(result + len); + result[len++] = ','; + c = stringrule(result + len, stdrp, dstrp->r_stdoff, zp->z_gmtoff); if (c < 0) { result[0] = '\0'; return -1; -- 2.1.0

1 2

Yukon time history updates with references containing some Canadian and global data
by Brian Inglis April 18, 2015

April 18, 2015

It seemed unlikely to me that the statement about the Yukon in line 1844 below "This is still valid;" was still valid, except in the sense that Yukon standard time may still be defined as GMT-9, although standard time in Yukon has not had that offset, and the name has not been used with that meaning, except in some historical sense, since 1973. So I tried to trace the history of Yukon time and found the following regulations, giving the reference title and URL if found, regulation name, and relevant quote if available. Each regulation specifically revokes its predecessor. The final reference is to the current Interpretation Act authorizing and resulting from these regulatory changes. Only recent regulations were retrievable via Yukon government site search or index, and only some via Canadian legal sources. Other sources used include articles titled "Standard Time and Time Zones in Canada" from JRASC via ADS Abstracts, cited by ADO for 1932 in northamerica:1456, and updated versions from 1958 and 1970 quoted below; each article includes current extracts from provincial and territorial ST and DST regulations at the end, summaries and details of standard times and daylight saving time at many locations across Canada, with time zone maps, tables and calculations for Canadian Sunrise, Sunset, and LMST; they also cover many countries and global locations, with a chart and table showing current Universal Time offsets, and may be useful as another source of information for 1970 and earlier. The coordinator should decide how much Yukon time history should change, relative to that currently documented at: northamerica:1838:# Northwest Territories, Nunavut, Yukon northamerica-1839- northamerica-1840-# From Paul Eggert (2006-03-22): northamerica-1841-# Dawson switched to PST in 1973. Inuvik switched to MST in 1979. northamerica-1842-# Mathew Englander (1996-10-07) gives the following refs: northamerica-1843-# * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68, northamerica:1844:# c. 7 defines Yukon standard time as UTC-9. This is still valid; northamerica-1845-# see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1). northamerica:1846:# * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00. northamerica-1847-# * O.I.C. 1980/02 established DST. northamerica-1848-# * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00. northamerica:1849:# Shanks & Pottenger say Yukon's 1973-10-28 switch was at 2:00; go northamerica-1850-# with Englander. northamerica-1851-# From Chris Walton (2006-06-26): northamerica-1852-# Here is a link to the old daylight saving portion of the interpretation northamerica-1853-# act which was last updated in 1987: northamerica-1854-# http://www.gov.yk.ca/legislation/regs/oic1987_056.pdf Standard Time and Time Zones in Canada; Smith, C.C.; JRASC, Vol. 26, pp.49-77; February 1932; SAO/NASA Astrophysics Data System (ADS) http://adsabs.harvard.edu/abs/1932JRASC..26...49S from p.75: Yukon Interpretation Ordinance Yukon standard time is the local mean time at the one hundred and thirty-fifth meridian. Standard Time and Time Zones in Canada; Smith, C.C.; Thomson, Malcolm M.; JRASC, Vol. 52, pp.193-223; October 1958; SAO/NASA Astrophysics Data System (ADS) http://adsabs.harvard.edu/abs/1958JRASC..52..193S from pp.220-1: Yukon Interpretation Ordinance, 1955, Chap. 16. (1) Subject to this section, standard time shall be reckoned as nine hours behind Greenwich Time and called Yukon Standard Time. (2) Notwithstanding subsection (1), the Commissioner may make regulations varying the manner of reckoning standard time. Yukon Territory Commissioner's Order 1966-20 Interpretation Ordinance http://? - no online source found Standard Time and Time Zones in Canada; Thomson, Malcolm M.; JRASC, Vol. 64, pp.129-162; June 1970; SAO/NASA Astrophysics Data System (ADS) http://adsabs.harvard.edu/abs/1970JRASC..64..129T from p.156: Yukon Territory Commissioner's Order 1967-59 Interpretation Ordinance The Commissioner of the Yukon Territory, pursuant to the Interpretation Ordinance, is pleased to and doth hereby order as follows: 1. Commissioner's Order 1966-20 dated at Whitehorse in the Yukon Territory on 27th January, 1966, is hereby revoked. 2. Yukon (East) Standard Time as defined by section 36 of the Interpretation Ordinance from and after mid-night on the 28th day of May, 1967 shall be reckoned in the same manner as Pacific Standard Time, that is to say, eight hours behind Greenwich Time in the area of the Yukon Territory lying east of the 138th degree longitude west. 3. In the remainder of the Territory, lying west of the 138th degree longitude west, Yukon (West) Standard Time shall be reckoned as nine hours behind Greenwich Time. Yukon Standard Time defined as Pacific Standard Time, YCO 1973/214 http://www.canlii.org/en/yk/laws/regu/yco-1973-214/latest/yco-1973-214.html C.O. 1973/214 INTERPRETATION ACT INTERPRETATION ACT Pursuant to the provisions of the Interpretation Act, the Commissioner of the Yukon Territory is pleased to and doth hereby order as follows: 1. Effective October 28, 1973 Commissioner's Order 1967/59 is hereby revoked. 2. Yukon Standard Time as defined by section 36 of the Interpretation Act from and after midnight on the twenty-eighth day of October, 1973 shall be reckoned in the same manner as Pacific Standard Time, that is to say eight hours behind Greenwich Time. Dated at Whitehorse, in the Yukon Territory, this 4th day of May, A.D., 1973. O.I.C. 1980/02 INTERPRETATION ACT http://? - no online source found Yukon Daylight Saving Time, YOIC 1987/56 http://www.canlii.org/en/yk/laws/regu/yoic-1987-56/latest/yoic-1987-56.html O.I.C. 1987/056 INTERPRETATION ACT INTERPRETATION ACT Pursuant to section 36 of the Interpretation Act, the Commissioner in Executive Council orders as follows: 1. In every year between (a) two o'clock in the morning in the first Sunday in April, and (b) two o'clock in the morning in the last Sunday in October, Standard Time shall be reckoned as seven hours behind Greenwich Time and called Yukon Daylight Saving Time. 2. Order-In-Council 1980/02 is hereby revoked. Dated at Whitehorse, in the Yukon Territory, this 9th day of March, A.D., 1987. Yukon Daylight Saving Time 2006, YOIC 2006/127 http://www.canlii.org/en/yk/laws/regu/yoic-2006-127/latest/yoic-2006-127.ht… O.I.C. 2006/127 INTERPRETATION ACT INTERPRETATION ACT Pursuant to section 33 of the Interpretation Act, the Commissioner in Executive Council orders as follows 1. In Yukon each year the time for general purposes shall be 7 hours behind Greenwich mean time during the period commencing at two o'clock in the forenoon on the second Sunday of March and ending at two o'clock in the forenoon on the first Sunday of November and shall be called Yukon Daylight Saving Time. 2. Order-in-Council 1987/56 is revoked. 3. This order comes into force January 1, 2007. Dated at Whitehorse, Yukon, this 2006. Interpretation Act, RSY 2002, c 125 http://www.canlii.org/en/yk/laws/stat/rsy-2002-c-125/latest/rsy-2002-c-125.… -- Take care. Thanks, Brian Inglis

3 3

Hawaii-Aleutian Standard Time
by Hank W. April 17, 2015

April 17, 2015

I happened to notice that the U.S. Code of Federal Regulations, Title 49, Subtitle A, Part 71, Section 71.12 states "...the Hawaii-Aleutian standard time zone, includes the entire State of Hawaii and, in the State of Alaska, that part of the Aleutian Islands that is west of 169 degrees 30 minutes west longitude." The America/Adak Zone data include this change, but the Pacific/Honolulu Zone data do not. Hank Wisniewski, Austin, Texas, U.S.A.

6 8

Samoa Standard Time
by Hank W. April 16, 2015

April 16, 2015

FYI: I sent the following message to my U.S. Senators and my U.S. Representative: Whereas there exists a country which has been named Samoa since July 1997, Whereas Samoa is entirely separate from the Territory of American Samoa, Whereas Samoa and American Samoa have had standard times since 1911, Whereas the standard time in Samoa has differed from the standard time in American Samoa since the 30th of December 2011 (in addition to the period from 1911 to 1950, when the time in Western Samoa was known as Samoa Time and the time in American Samoa was known as Nome Standard Time), and Whereas the standard times in both locations continue to be known as Samoa Standard Time, Despite the report in the Samoa Wikipedia article that American Samoans protested Samoa's name change and continue to call it Western Samoa, and Despite the difference between the abbreviations of Samoa's Samoa Standard Time (WSST) and American Samoa's Samoa Standard Time (SST), which is due to the fact that the ISO-3166 international standard abbreviation of Samoa is still WS, In the interest of reducing international confusion, I recommend that the Code of Federal Regulations, Title 49, Subtitle A, Part 71, Section 71.13 and the United States Code, Title 15, Chapter 6, Subchapter IX, Section 263 be amended to change the name of the standard time in American Samoa from Samoa standard time to American Samoa standard time. Although I hope they make the change, I'm not holding my breath. I sent a similar message last year to the U.S. Department of Transportation, the Executive Department in charge of U.S. time zones, but received no reply. Besides, if we were interested in reducing international confusion, we would have switched to the metric system. Hank Wisniewski, Austin, Texas, U.S.A.

1 0

Belarus is listed in MSK timezone
by Dzmitry Kazimirchyk April 14, 2015

April 14, 2015

I am in Belarus and I have recently noticed that my local timezone is displayed as MSK (Moscow Time) instead of FET (Further Eastearn European Time). Belarus has not made any changes to its timezone (daylight saving) policies recently, so I guess the reasoning behind this is that Russia have changed its time effectively putting its internal MSK timezone into the same time Belarus already had. However this doesn't cancel out the fact that Belarus is an independent country and it is very strange for a country to be listed under an internal timezone of some other country... Could anyone please shed some light on the reasoning behind putting Belarus into MSK timezone and if we can get our FET timezone back or at least have MSK changed to something neutral. Best regards, Dzmitry Kazimirchyk

15 30

Luhansk & Donetsk, Ukraine
by Hank W. April 14, 2015

April 14, 2015

timeanddate.com reported that Luhansk and Donetsk, the two easternmost Ukrainian regions, did not switch back to EET with the rest of Ukraine on 26 Oct 2014 but are now "permanently" on MSK. However, the 2015b europe data file does not seem to reflect that. Hank Wisniewski, Austin, Texas, U.S.A.

2 1

[tz-announce] 2015c release of tz code and data available
by Paul Eggert April 14, 2015

April 14, 2015

The 2015c release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes. Although this release is based on the best information we had when it was made, the daylight-saving situation in Egypt seems to be fluid, and we may need to generate another release soon. Changes affecting future time stamps Egypt's spring-forward transition is at 24:00 on April's last Thursday, not 00:00 on April's last Friday. 2015's transition will therefore be on Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) Changes affecting past time stamps The following changes affect some pre-1991 Chile-related time stamps in America/Santiago, Antarctica/Palmer, and Pacific/Easter. The 1910 transition was January 10, not January 1. The 1918 transition was September 10, not September 1. The UTC-4 time observed from 1932 to 1942 is now considered to be standard time, not year-round DST. Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31, then reverted to standard time, then switched its time zone to UTC-5 on 1947-04-01. Assume transitions before 1968 were at 00:00, since we have no data saying otherwise. The spring 1988 transition was 1988-10-09, not 1988-10-02. The fall 1990 transition was 1990-03-11, not 1990-03-18. Assume no UTC offset change for Pacific/Easter on 1890-01-01, and omit all transitions on Pacific/Easter from 1942 through 1946 since we have no data suggesting that they existed. One more zone has been turned into a link, as it differed from an existing zone only for older time stamps. As usual, this change affects UTC offsets in pre-1970 time stamps only. The zone's old contents have been moved to the 'backzone' file. The affected zone is America/Montreal. Changes affecting commentary Mention the TZUpdater tool. Mention "The Time Now". (Thanks to Brandon Ramsey.) Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2015c.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2015c.tar.gz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2015c.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2015c.tar.gz As usual, links to the latest release files are here: http://www.iana.org/time-zones/repository/tzcode-latest.tar.gz http://www.iana.org/time-zones/repository/tzdata-latest.tar.gz ftp://ftp.iana.org/tz/tzcode-latest.tar.gz ftp://ftp.iana.org/tz/tzdata-latest.tar.gz Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 14ef987885fc4355ab03450cca48bb4fad31f957 dated Sat Apr 11 08:55:55 2015 -0700 and tagged '2015c' in the experimental github repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 01f57e27c1031434e7da8876f30084dfef9dbe36988539c857f71f86c0ab1995f82c9fe5dad32ded12185c53433b7f1a0553d8848a2d97529981021ffd70dfb1 tzcode2015c.tar.gz ca89c2041c8420e7b154660e227211b60ba20e8d70b6870b5c0a149838c588d13065202b1266c59caf22a99df2387da95ac04049b9ecb7939cd406c7f007a73e tzdata2015c.tar.gz Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVKUS9AAoJEO2X6Q5iqn40JdoP/25PmMMLls7GKH2MyL3Hgfnk y3eAj2bwV4KtT9OhUbEVgDcG+ZNrorQbRZ/p6Bw5li8lKoAV6S9CbbPbb/QQYciu 0vUn8U5rLCyoHeaeubtf+O6ChyILBsI/oYn/ROQ2meOCP2L35LrGSlkeHTOQd+V0 cyzQ7XfkiO1mbapleIXH46qwbq8kN+GvY64nHxuTwWQSmmV1Z1nBHysNriM9BtXR GsOh0CQ/B7/q1XKbRcoT2B/zuBtuUK/J16UHeSBsy1iQXT9eKx5UdAK82MyRh6Vq RjQggIxJfCILj+yY87UwNirVA4c5cIPCyBeFGyABH5SyAUqJwzka3R1BBe1wFecW eCSqlRMgFSQoRH7/W4HnXhXUx8p06lJR6fzTM/ao8i99K8vdxrVxaOz8j+ouv7kW foOxyL8d6f3S9cQVuFV9igF44xFJ7IbI61DdhYGA/x9blJidNPrAgFi2LeChK2Pn EqOIR7w9+AhJ+cidtuhaxUG+VWt6lTSPUF9Zj5tSvFUUQfq9mM2HHUmqG1j8vXDp 8lcsIF0Pdt6AvMw9y7QrtoUiIiIa0XABJaj3HCPnEB3AAyG277oDbQdyToA87rbd RlyOoV7W1cNVm+yyrY43mEji3eF5tU8SRflfOSw3Tw3hqg5ShW1Wb7wGuCnwBppc 3ixjt1wMIKLox/LXA/YI =ZAkh -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVKUS9AAoJEO2X6Q5iqn407KQP/31ERg5rduXfmPsw/8tIrcrk U2Qc/7LysOZr5ncs2YAMI/bVIqZnrH5EZVj4Rg53Ke8S/4PLDGkPnsOlV8Vw16lw 7mW4BbzMu8LtAoeE9U3/8MGaZSn8gOi4o6XN28Y4gz6B1jcSm0JprX7hUAOp77DR IXKRPXoZyGHH30O8HxdhofKSOVpOONw72IbtkfuR24m4YSYFyAWv3bx8C94Y1Aim asKOx96vvk3PMO4yy1dPoJdNO/YN1KKSmDprJCNkCB8GXC21GWCFJhLn7KdXwp4+ b1aDSDO52U5KsxDZQ7pW4cAJyDpIBJAASTm24JAMubixGKlnBTzBann7WjptaoIh I0jck3Raef6xo9AiH7tmvPgDwiVZFrT1Bu+CszuULA6J/FFQtnsZz3S806jabRQe HKy8O8wQK+mKG8pRy9LBZju5w2KgSRWdWvYmkmFQRu9D40DUKgN/hWMjjSPYOr6b yigvz33Tyw87G/O+ZV21B9k+OM55FEhI+Tv1g2r3Sn6PZ3Q8IXbD8CAt1lSQevUj K/vyDDQrTVQWFvG8+swrT1cVkbL8n5B+FdELU22eTGf6doDAt4nLzSqNquxnT8yG 0kECc1xTNIwwo3Weh3O3jPOUMxMZZ0+hQKP7OnwyBPVE5b705Io6MA0t4oibAZci SX0rJXaaDRgULk7yyy55 =6G/t -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

1 0

Re: [tz] Luhansk & Donetsk, Ukraine
by Hank W. April 13, 2015

April 13, 2015

Sorry, here is a direct link to the article: http://www.timeanddate.com/news/time/luhansk-donetsk-moscow-time.html From: Hank W. [mailto:hankw1@austin.rr.com] Sent: Monday, April 13, 2015 17:43 To: Time Zone Group Subject: Luhansk & Donetsk, Ukraine timeanddate.com reported that Luhansk and Donetsk, the two easternmost Ukrainian regions, did not switch back to EET with the rest of Ukraine on 26 Oct 2014 but are now "permanently" on MSK. However, the 2015b europe data file does not seem to reflect that. Hank Wisniewski, Austin, Texas, U.S.A.

1 0

TZ for Egypt Change
by Ahmed Mekawy April 11, 2015

April 11, 2015

Good day, According to several news reports, Egypt will start DST on midnight after Thursday, April 30, 2015. This is based on a law (no 35) from May 15, 2014 saying it starts the last Thursday of April. This means we will to change the rule to "lastThu 24:00s" instead of "lastFri 0:00s". Clocks will still be turned back for Ramadan, but dates not yet announced. Some sources (Arabic): http://www.masralarabia.com/%D8%A7%D8%AE%D8%A8%D8%A7%D8%B1-%D9%85%D8%B5%D8%… 547833-30-%D8%A5%D8%A8%D8%B1%D9%8A%D9%84-%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%B9 %D9%85%D9%84-%D8%A8%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8% B5%D9%8A%D9%81%D9%8A http://almogaz.com/news/weird-news/2015/04/05/1947105 Our English summary: http://www.timeanddate.com/news/time/egypt-starts-dst-2015.html http://www.timeanddate.com/time/change/egypt/cairo The latest IANA data was pointing the change will happen 24th April. But now it seems it will be changing to 1st May Thanks, Ahmed -- HYPERLINK "http://www.oracle.com/us/support/best-practices/overview/index.html"cid:part1.09080109.00060709@oracle.com HYPERLINK "http://www.oracle.com/" \nOracle Ahmed Mekawy | Principal Technical Account Manager Phone: HYPERLINK "tel:+971%2043%20909%20356"+202 3535 0211 | Mobile: HYPERLINK "tel:+971%2043%20909%20356"+2 01060064214 Oracle Global Systems Support ORACLE Egypt | 2 ElHegaz St., CEDARE Building | 11737 Cairo HYPERLINK "http://www.oracle.com/commitment" \nGreen OracleOracle is committed to developing practices and products that help protect the environment

2 3

Egypt’s PM orders poll over implementing Daylight saving time
by WorldTimeZone April 11, 2015

April 11, 2015

According to some news http://english.ahram.org.eg/NewsContent/1/64/127434/Egypt/Politics-/Egypt- to-hold-national-poll-on-daylight-saving-tim.aspx http://amwalalghad.com/en/news/egypt-news/34800-egypts-pm-orders-poll-over- implementing-daylight-saving-time.html Egypt to hold national poll on daylight saving time The cabinet previously announced that clocks would go forward one hour starting on 1 May Alexander Krivenyshev http://www.WorldTimeZone.com

1 0

Egypt to hold national poll on daylight saving time
by Alexander Krivenyshev April 11, 2015

April 11, 2015

According to some news http://english.ahram.org.eg/NewsContent/1/64/127434/Egypt/Politics-/Egypt- to-hold-national-poll-on-daylight-saving-tim.aspx http://amwalalghad.com/en/news/egypt-news/34800-egypts-pm-orders-poll-over- implementing-daylight-saving-time.html Egypt to hold national poll on daylight saving time The cabinet previously announced that clocks would go forward one hour starting on 1 May Alexander Krivenyshev http://www.WorldTimeZone.com

1 0

Leap seconds puzzle
by Paul_Koning＠dell.com April 9, 2015

April 9, 2015

Gentlepeople, I’ve been sorting to a flurry of questions about leap seconds from colleagues (triggered by the recent announcement of an upcoming leap second). That sent me to the Theory file, and some experiments. Those experiments leave me puzzled. I apologize for going a bit off topic for this list, but the expertise is clearly here. The Theory file says that POSIX requires leap seconds to be ignored. And indeed, if I set my system timezone to a POSIX zone description and ask it to convert a time value that’s an integer multiple of 86400, I end up at an exact hour (or half hour) multiple, for example exactly midnight if UTC. And similarly, if I set my zone to a “right” one and do the conversion, I get a time that’s a few seconds shy of the exact multiple, as expected. I can also see that my default timezone definitions on my various Unix machines are POSIX ones, again as expected. So here is the puzzle. I would expect WWV, and www.time.gov, to reflect leap seconds. So why would they give me a time that matches, to the second, the POSIX time on my workstation? Does NTP send POSIX seconds since epoch rather than real ones? paul

10 12

Egypt DST starts one week later
by Steffen Thorsen April 8, 2015

April 8, 2015

According to several news reports, Egypt will start DST on midnight after Thursday, April 30, 2015. This is based on a law (no 35) from May 15, 2014 saying it starts the last Thursday of April. This means we will to change the rule to "lastThu 24:00s" instead of "lastFri 0:00s". Clocks will still be turned back for Ramadan, but dates not yet announced. Some sources (Arabic): http://www.masralarabia.com/%D8%A7%D8%AE%D8%A8%D8%A7%D8%B1-%D9%85%D8%B5%D8%… http://almogaz.com/news/weird-news/2015/04/05/1947105 Our English summary: http://www.timeanddate.com/news/time/egypt-starts-dst-2015.html Best regards, Steffen Thorsen - timeanddate.com

2 1

Liberal and conservative time zones in 1950s Nashville
by Paul Eggert April 7, 2015

April 7, 2015

In 1950s Nashville a public clock had dueling faces, one for conservatives and the other for liberals; the two sides didn't agree about the time of day. I haven't found a photo of this clock, nor have I tracked down the TIME magazine report cited below, but here's the story as told by the late American journalist John Seigenthaler, who was there: "The two [newspaper] owners held strongly contrasting political and ideological views. Evans was a New South liberal, Stahlman an Old South conservative, and their two papers frequently clashed editorially, often on the same day.... In the 1950s as the state legislature was grappling with the question of whether to approve daylight saving time for the entire state, TIME magazine reported: "'The Nashville Banner and The Nashville Tennessean rarely agree on anything but the time of day — and last week they couldn't agree on that.' "It was all too true. The clock on the front of the building had two faces — The Tennessean side of the building facing west, the other, east. When it was high noon Banner time, it was 11 a.m. Tennessean time." My source: Seigenthaler J. For 100 years, Tennessean had it covered. The Tennessean 2007-05-11, republished 2015-04-06. http://www.tennessean.com/story/insider/extras/2015/04/06/archives-seigenth…

1 0

[PROPOSED PATCH] Propagate Chile changes to Antarctica/Palmer
by Paul Eggert April 6, 2015

April 6, 2015

When recently changing the 'Chile' ruleset in 'southamerica', I forgot to update its copy 'ChileAQ' in 'antarctica'. This sort of thing has been a continuing problem over the years. Attempt to make further recurrences less likely by moving 'Antarctica/Palmer' from 'antarctica' to 'southamerica', so that there's no need to copy the rules in question. * antarctica (ArgAQ, ChileAQ): Remove. (Antarctica/Palmer): Move to ... * southamerica: ... this file, and use plain 'Arg' and 'Chile'. * NEWS: Mention Antarctica/Palmer and the other affected zones. --- NEWS | 3 ++- antarctica | 51 +-------------------------------------------------- southamerica | 22 +++++++++++++++++++--- 3 files changed, 22 insertions(+), 54 deletions(-) diff --git a/NEWS b/NEWS index 35d2c10..8bef7a5 100644 --- a/NEWS +++ b/NEWS @@ -4,7 +4,8 @@ Unreleased, experimental changes Changes affecting past time stamps - The following changes affect some pre-1991 time stamps in Chile: + The following changes affect some pre-1991 Chile-related time stamps + in America/Santiago, Antarctica/Palmer, and Pacific/Easter. The 1910 transition was January 10, not January 1. diff --git a/antarctica b/antarctica index ebae994..2af088f 100644 --- a/antarctica +++ b/antarctica @@ -15,41 +15,6 @@ # I made up all time zone abbreviations mentioned here; corrections welcome! # FORMAT is 'zzz' and GMTOFF is 0 for locations while uninhabited. -# These rules are stolen from the 'southamerica' file. -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule ArgAQ 1964 1966 - Mar 1 0:00 0 - -Rule ArgAQ 1964 1966 - Oct 15 0:00 1:00 S -Rule ArgAQ 1967 only - Apr 2 0:00 0 - -Rule ArgAQ 1967 1968 - Oct Sun>=1 0:00 1:00 S -Rule ArgAQ 1968 1969 - Apr Sun>=1 0:00 0 - -Rule ArgAQ 1974 only - Jan 23 0:00 1:00 S -Rule ArgAQ 1974 only - May 1 0:00 0 - -Rule ChileAQ 1972 1986 - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 1974 1987 - Oct Sun>=9 4:00u 1:00 S -Rule ChileAQ 1987 only - Apr 12 3:00u 0 - -Rule ChileAQ 1988 1989 - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 1988 only - Oct Sun>=1 4:00u 1:00 S -Rule ChileAQ 1989 only - Oct Sun>=9 4:00u 1:00 S -Rule ChileAQ 1990 only - Mar 18 3:00u 0 - -Rule ChileAQ 1990 only - Sep 16 4:00u 1:00 S -Rule ChileAQ 1991 1996 - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 1991 1997 - Oct Sun>=9 4:00u 1:00 S -Rule ChileAQ 1997 only - Mar 30 3:00u 0 - -Rule ChileAQ 1998 only - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 1998 only - Sep 27 4:00u 1:00 S -Rule ChileAQ 1999 only - Apr 4 3:00u 0 - -Rule ChileAQ 1999 2010 - Oct Sun>=9 4:00u 1:00 S -Rule ChileAQ 2000 2007 - Mar Sun>=9 3:00u 0 - -# N.B.: the end of March 29 in Chile is March 30 in Universal time, -# which is used below in specifying the transition. -Rule ChileAQ 2008 only - Mar 30 3:00u 0 - -Rule ChileAQ 2009 only - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 2010 only - Apr Sun>=1 3:00u 0 - -Rule ChileAQ 2011 only - May Sun>=2 3:00u 0 - -Rule ChileAQ 2011 only - Aug Sun>=16 4:00u 1:00 S -Rule ChileAQ 2012 2015 - Apr Sun>=23 3:00u 0 - -Rule ChileAQ 2012 2014 - Sep Sun>=2 4:00u 1:00 S - # Argentina - year-round bases # Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05 # Carlini, Potter Cove, King George Island, -6414-0602320, since 1982-01 @@ -344,21 +309,7 @@ Zone Antarctica/Rothera 0 - zzz 1976 Dec 1 # USA - year-round bases # # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) -# -# From Ethan Dicks (1996-10-06): -# It keeps the same time as Punta Arenas, Chile, because, just like us -# and the South Pole, that's the other end of their supply line.... -# I verified with someone who was there that since 1980, -# Palmer has followed Chile. Prior to that, before the Falklands War, -# Palmer used to be supplied from Argentina. -# -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Antarctica/Palmer 0 - zzz 1965 - -4:00 ArgAQ AR%sT 1969 Oct 5 - -3:00 ArgAQ AR%sT 1982 May - -4:00 ChileAQ CL%sT 2015 Apr 26 3:00u - -3:00 - CLT -# +# See 'southamerica' for Antarctica/Palmer, since it uses South American DST. # # McMurdo Station, Ross Island, since 1955-12 # Amundsen-Scott South Pole Station, continuously occupied since 1956-11-20 diff --git a/southamerica b/southamerica index 908dd6e..be63a88 100644 --- a/southamerica +++ b/southamerica @@ -1225,9 +1225,6 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # From Paul Eggert (2015-03-03): # For now, assume that the extension will persist indefinitely. -# NOTE: ChileAQ rules for Antarctic bases are stored separately in the -# 'antarctica' file. - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1931 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - @@ -1289,6 +1286,25 @@ Zone Pacific/Easter -7:17:28 - LMT 1890 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is, # and Antarctic bases, are like America/Santiago. +# Antarctic base using South American rules +# (See the file 'antarctica' for more.) +# +# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) +# +# From Ethan Dicks (1996-10-06): +# It keeps the same time as Punta Arenas, Chile, because, just like us +# and the South Pole, that's the other end of their supply line.... +# I verified with someone who was there that since 1980, +# Palmer has followed Chile. Prior to that, before the Falklands War, +# Palmer used to be supplied from Argentina. +# +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone Antarctica/Palmer 0 - zzz 1965 + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1982 May + -4:00 Chile CL%sT 2015 Apr 26 3:00u + -3:00 - CLT + # Colombia # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, -- 2.1.0

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Re: [tz] [IANA #817081] Re: New time zone in Quintana Roo, Mexico.
by Ricardo Muleiro April 4, 2015

April 4, 2015

Hi, I´m trying to advise that in Quintana Roo, Mexico government change time zone to GTM - 5:00 permanently (entire year). ¿Can you help me? Thank you so much. 2015-04-03 13:01 GMT-05:00 Amanda Baber via RT <iana-questions(a)iana.org>: > Hi Ricardo, > > Sorry, but we need you to go to the mailing list -- there may be questions > that we can't answer. See > > https://mm.icann.org/mailman/listinfo/tz > > Thanks, and sorry we can't be more helpful, > > Amanda Baber > IANA Request Specialist > ICANN > > On Fri Apr 03 17:56:10 2015, ricardomuleiro(a)blueray.mx wrote: > > Thank you so much for your response. Is there any way you can give my > > message to responsible for changes? > > > > > > > > Thanks again. > > > > > > > > 2015-04-03 12:21 GMT-05:00 Amanda Baber via RT <iana-questions(a)iana.org > >: > > > > > Dear Ricardo, > > > > > > Thank you for contacting us. > > > > > > Per the Time Zone Coordinator and RFC 6557, questions and comments > about > > > the contents of the Time Zone Database should be posted on the TZ > mailing > > > list. > > > > > > We host the database, but updates are made by the TZ Coordinator in > > > consultation with the list. > > > > > > For archives and subscription information, please see > > > > > > http://www.iana.org/time-zones > > > > > > Best regards, > > > > > > Amanda Baber > > > IANA Request Specialist > > > ICANN > > > > > > On Fri Apr 03 16:04:16 2015, ricardomuleiro(a)blueray.mx wrote: > > > > Hi, I live in Cancún, Benito Juárez, Quintana Roo, México and > recently, > > > the > > > > state government decided to change our time zone, being now > permanently > > > GTM > > > > - 5:00. Right now, 1 hour ahead Mexico City (capital of our > country). I > > > > believe you haven´t updated this information. Thank you so much for > > > > updating it. > > > > > > > > > > > > > > > > Best regards. > > > > > > > > > > > > > > >

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