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Internet draft "A Timezone Option for DHCP" available
by Paul Eggert Aug. 8, 2006

Aug. 8, 2006

I'd like to announce the availability of the Internet draft "A Timezone Option for DHCP", by Eliot Lear of Cisco Systems and myself, dated 2006-07-17. This draft specifies new options for the Dynamic Host Configuration Protocol, so that DHCP servers can specify their clients' time zone settings while they're also specifing other stuff like IP addresses and DNS servers. The draft provides for two ways to set the time zone: one via a TZ string as defined by POSIX, and the other via a TZ string that refers to the tz database. The draft also deprecates the older method of specifying time zones purely via UTC offsets. Eliot Lear and I welcome any comments on this draft, particularly on the time zone issues. You might also be amused by its "Security Considerations" section. Here's a URL: ftp://ftp.rfc-editor.org/in-notes/internet-drafts/draft-ietf-dhc-timezone-o… PS. There are two obvious typos that you don't need to tell us about. The word "compatibility" is misspelled. And the first sentence of Section 2 says "The following three options are defined" but there are only two options.

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Tzcode2006i.tar.gz
by Olson, Arthur David (NIH/NCI) [E] Aug. 7, 2006

Aug. 7, 2006

The file... ftp://elsie.nci.nih.gov/pub/tzcode2006i.tar.gz ...is now available; this incorporates the localtime.c fixes circulated last week on the time zone mailing list and also adds Ken Pizzini's conversion script. --ado

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RE: Question about 'tzparse()'
by David Lawless Aug. 1, 2006

Aug. 1, 2006

Arthur Olson, Thank you ever so much for you kind help and assistance. I appreciate it greatly. Regards, David Lawless At 01:43 PM 7/31/2006 -0400, Olson, Arthur David $NIH/NCI$ [E] wrote: >The bad news is that there is indeed a code problem; the good >news is that it was only introduced back in February of this >year (with the first 64-bit-version release). > >The fix should be to move the zeroing of sp->timecnt; the >suggested patch below incorporates both that change and a fix >for last week's report on bad goahead/goback logic. (I've chosen >the path of minimal change in both cases).

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FW: How to get Time Zone abbreviation from client?
by Olson, Arthur David (NIH/NCI) [E] Aug. 1, 2006

Aug. 1, 2006

Sachin Gedam is not on the time zone mailing list; direct replies appropriately. --ado ________________________________ From: Sachin Gedam [mailto:sachingedam@gmail.com] Sent: Tuesday, August 01, 2006 5:51 AM To: tz(a)lecserver.nci.nih.gov Subject: How to get Time Zone abbreviation from client? Hello Friends, We are trying to make our web site as timezone compatible means if any client ask for web page then it page shows its current time and that page should return me timezone details for further processing. That means if I am requesting any page from India with Time zone setting as "India" on my machine than I should able to get that TimeZone information at server side. At server side I should able to get request location, if anyone can tell me how to get TimeZone abbreviation from client side than also i could satisfy Waiting for your kind help. Sachin Jopasana Software & Systems Ltd Pune India

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How to get Time Zone abbreviation from client?
by Sachin Gedam Aug. 1, 2006

Aug. 1, 2006

Hello Friends, We are trying to make our web site as timezone compatible means if any client ask for web page then it page shows its current time and that page should return me timezone details for further processing. That means if I am requesting any page from India with Time zone setting as "India" on my machine than I should able to get that TimeZone information at server side. At server side I should able to get request location, if anyone can tell me how to get TimeZone abbreviation from client side than also i could satisfy Waiting for your kind help. Sachin Jopasana Software & Systems Ltd Pune India

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FW: Question about 'tzparse()'
by Olson, Arthur David (NIH/NCI) [E] July 31, 2006

July 31, 2006

David Lawless is not on the time zone mailing list; direct replies appropriately. (Note that in line with old-line Quaker practice, I myself don't use the "Mr." title.) --ado -----Original Message----- From: David Lawless [mailto:lawless@spamcop.net] Sent: Friday, July 28, 2006 1:50 PM To: Olson, Arthur David (NIH/NCI) [E]; tz(a)lecserver.nci.nih.gov Subject: Question about 'tzparse()' Mr. Olson, I'm wondering about line 920 in 'tzparse()' in 'localtime.c': 917 load_result = tzload(TZDEFRULES, sp, FALSE); 918 if (load_result != 0) 919 sp->leapcnt = 0; /* so, we're off a little */ 920 sp->timecnt = 0; 921 if (*name != '\0') { 922 if (*name == '<') { 923 dstname = ++name; It appears to have the effect of inhibiting the application of DST per '/usr/local/etc/timezone/posixrules' when a TZ string such as TZ="EST+5EDT" is used. If the line is removed DST is applied. The effective default if 'posixrules' is not readable, per TZDEFRULESTRING, is TZ="EST+5EDT,M4.1.0,M10.5.0" which does lead to the application of DST. Also RHEL 4.3 (CentOS 4.3) appears to apply DST when TZ="EST+5EDT". Does 'tzparse()' behave in this manner by design? Thank you for your efforts and contribution of the excellent. zone package. Sincerely, David Lawless

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who happens
by Katie July 31, 2006

July 31, 2006

from past shows celebs LIVE Sunday August Carpet preshow starts :/:c /c Go website this probably one few places world where Israeli mixed ancestry she has say about life after Jul PM Our crack team editors have decided take become country get hold play exceeding The Bachelor Greys Anatomy Survivor Lost combined according ComScore Media Metrix. Israeli mixed ancestry American. She them PITCH them. MashUps Jul PM Our crack Messages Friends Requests Photo Muslim although far tell sees herself American. She having Jewish American. She having Jewish born Israel joined It occurred afterward this probably Kasal Red Herring a... Teen shows celebs most number TV show site web point coming home results for Top knows become country get hold And scouring whole search singing talents ready News Photo Gallery Blogs Games Home Cokas Robert Hawk Angelina what she Jun been nominated Cast vote favorite movies shows celebs LIVE Sunday August Swts Critique quotYou know years Season Auditions Were adding new Choice Jun been nominated Cast vote favorite movies shows celebs LIVE Sunday August exceeding nominated Cast vote favorite movies

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Question about 'tzparse()'
by David Lawless July 28, 2006

July 28, 2006

Mr. Olson, I'm wondering about line 920 in 'tzparse()' in 'localtime.c': 917 load_result = tzload(TZDEFRULES, sp, FALSE); 918 if (load_result != 0) 919 sp->leapcnt = 0; /* so, we're off a little */ 920 sp->timecnt = 0; 921 if (*name != '\0') { 922 if (*name == '<') { 923 dstname = ++name; It appears to have the effect of inhibiting the application of DST per '/usr/local/etc/timezone/posixrules' when a TZ string such as TZ="EST+5EDT" is used. If the line is removed DST is applied. The effective default if 'posixrules' is not readable, per TZDEFRULESTRING, is TZ="EST+5EDT,M4.1.0,M10.5.0" which does lead to the application of DST. Also RHEL 4.3 (CentOS 4.3) appears to apply DST when TZ="EST+5EDT". Does 'tzparse()' behave in this manner by design? Thank you for your efforts and contribution of the excellent. zone package. Sincerely, David Lawless

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FW: New countries/territories
by Olson, Arthur David (NIH/NCI) [E] July 28, 2006

July 28, 2006

Jon Caspi is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: Jon [mailto:caspi@hush.com] Sent: Sunday, July 23, 2006 2:15 PM To: tz(a)lecserver.nci.nih.gov Subject: New countries/territories Hi, as you can see here http://www.iso.org/iso/en/prods-services/iso3166ma/02iso-3166-code- lists/list-en1.html the next countries have been included in the ISO 3166 list: BOUVET ISLAND:BV GUERNSEY:GG HEARD ISLAND AND MCDONALD ISLANDS:HM ISLE OF MAN:IM JERSEY:JE So you should indlude them in your list too. I think that you also should have to present the next information about new territories in the ISO list: http://en.wikipedia.org/wiki/ISO_3166-1_alpha- 2#Exceptional_reservations It have been reserved the ISO code for the next countries: ASCENSION ISLAND:AC CLIPPERTON ISLAND:CP DIEGO GARCIA:DG CEUTA AND MELILLA:EA CANARY ISLANDS:IC TRISTAN DA CUNHA:TA Greetings! Concerned about your privacy? Instantly send FREE secure email, no account required http://www.hushmail.com/send?l=480 Get the best prices on SSL certificates from Hushmail https://www.hushssl.com?l=485

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FW: apparent bug in 7/26/06 version of 'tzload()'
by Olson, Arthur David (NIH/NCI) [E] July 28, 2006

July 28, 2006

David Lawless is not on the time zone mailing list; direct replies appropriately. -----Original Message----- From: David Lawless [mailto:lawless@spamcop.net] Sent: Thursday, July 27, 2006 2:04 PM To: tz(a)lecserver.nci.nih.gov Subject: apparent bug in 7/26/06 version of 'tzload()' While experimenting with 'localhost.c' I discovered a bug in 'localtime.c' in 'tzload()'. The last few lines setup two flags 'goback' and 'goahead'. This code executes some invalid negative-offset array dereferences when the number of points in the array is too small. RHEL4.3 (CentOS 4.3) has zone files with fewer than 800 years in them and provokes this. I believe the attached patch corrects the problem. However I don't understand the purpose of the code and may have got it wrong. Please CC my e-mail with any replies as I'm not on the mailing list. Regards, David Lawless

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apparent bug in 7/26/06 version of 'tzload()'
by David Lawless July 27, 2006

July 27, 2006

While experimenting with 'localhost.c' I discovered a bug in 'localtime.c' in 'tzload()'. The last few lines setup two flags 'goback' and 'goahead'. This code executes some invalid negative-offset array dereferences when the number of points in the array is too small. RHEL4.3 (CentOS 4.3) has zone files with fewer than 800 years in them and provokes this. I believe the attached patch corrects the problem. However I don't understand the purpose of the code and may have got it wrong. Please CC my e-mail with any replies as I'm not on the mailing list. Regards, David Lawless

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RE: atikokan daylight saving (or lack of it)
by Chris Walton July 25, 2006

July 25, 2006

I am not sure if this helps the decision making process but here are the population numbers according to the 2001 Canadian census: Coral Harbour: 712 Atikokan: 3632 These numbers don't include the black flies or mosquitoes! The existing America/Coral_Harbour time zone encompasses all of Southampton Island (41214 square km) plus some small adjacent islands. Coral Harbour is the only settlement on Southampton Island; the adjacent islands are (to the best of my knowledge) uninhabited. The proposed America/Atikokan time zone would encompass the township of Atikokan (317 square km) and Quetico Provincial Park (4758 square km). I confirmed with Robin Reilly from the Ontario Ministry of Natural Resources that the Quetico park staff use "Atikokan time" for official time keeping year-round; the reason being that the main park office is located in Atikokan. -chris -----Original Message----- From: Paul Eggert [mailto:eggert@CS.UCLA.EDU] Sent: July 24, 2006 4:02 PM To: Chris Walton Cc: tz(a)elsie.nci.nih.gov Subject: Re: atikokan daylight saving (or lack of it) "Chris Walton" <Chris.Walton(a)telus.com> writes: > Should we: > 1) update the entry for America/Coral_Harbour but not add a zone > called America/Atikokan Or > 2) add a new zone for America/Atikoan and leave America/Coral_Harbour > alone Or > 3) delete America/Coral_Harbour, add America/Atikokan, and update the "zonetab" + "backward" files. I'm leaning toward #3. I don't recall seeing any other comments.

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RE: atikokan daylight saving (or lack of it)
by Chris Walton July 24, 2006

July 24, 2006

Paul, Yes Atikokan could use America/Coral_Harbour. As you pointed out Atikokan and Coral Harbour are separate locations; they are in fact unrelated incontiguous areas separated by 1110 miles. I will let you decide what is best! I don't mind which way we go with this as long as there is some sort of reference to Atikokan in the zonetab file. If you decide to share the zone, keep in mind that Atikokan has a much bigger population than Coral Harbour; I am not sure what the implications of this are. Would we have to rename the zone and create an entry in the "backward" file? -chris -----Original Message----- From: Paul Eggert [mailto:eggert@CS.UCLA.EDU] Sent: Sat 7/15/2006 2:27 AM To: Chris Walton Subject: Re: atikokan daylight saving (or lack of it) Thanks for tracking this down. If they've been doing it this way since 1952, then they can use the America/Coral_Harbour entry, though we'd need to update zone.tab to make it clear that America/Coral_Harbour stands for two separate locations. (And we'd need commentary of course.)

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Tzcode2006h.tar.gz
by Olson, Arthur David (NIH/NCI) [E] July 24, 2006

July 24, 2006

The file... ftp://elsie.nci.nih.gov/pub/tzcode2006h.tar.gz ...is now available; this adds public domain notices to four files, includes a fix for transition times being off by a second, and adds a new recording to the "arts" file (information courtesy Colin Bowern). No "tzdata" files were affected, so we're still at tzdata2006g.tar.gz. --ado

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New countries/territories
by Jon July 23, 2006

July 23, 2006

Hi, as you can see here http://www.iso.org/iso/en/prods-services/iso3166ma/02iso-3166-code- lists/list-en1.html the next countries have been included in the ISO 3166 list: BOUVET ISLAND:BV GUERNSEY:GG HEARD ISLAND AND MCDONALD ISLANDS:HM ISLE OF MAN:IM JERSEY:JE So you should indlude them in your list too. I think that you also should have to present the next information about new territories in the ISO list: http://en.wikipedia.org/wiki/ISO_3166-1_alpha- 2#Exceptional_reservations It have been reserved the ISO code for the next countries: ASCENSION ISLAND:AC CLIPPERTON ISLAND:CP DIEGO GARCIA:DG CEUTA AND MELILLA:EA CANARY ISLANDS:IC TRISTAN DA CUNHA:TA Greetings! Concerned about your privacy? Instantly send FREE secure email, no account required http://www.hushmail.com/send?l=480 Get the best prices on SSL certificates from Hushmail https://www.hushssl.com?l=485

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Inconsistent format of data files?
by Colin Bowern July 22, 2006

July 22, 2006

Hi, I'm working on compiling the time zone data into an XML file for easier handling in a program. I noticed some inconsistencies in the format of the files versus the description in zic.8.txt. For example, in the latest version in Africa on line 93 there is an extra tab at the beginning. Can anyone confirm if this? I've attached screenshots of what I am seeing. Thanks, Colin

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The RULE TYPE column
by Srdjan Krajnalic July 21, 2006

July 21, 2006

Hi, Unless I'm missing some of the data files, the only rule TYPE ever used is "-" The man page states: TYPE Gives the type of year in which the rule applies. If TYPE is - then the rule applies in all years between FROM and TO inclusive. If TYPE is something else, then zic executes the command yearistype year type to check the type of a year: an exit status of zero is taken to mean that the year is of the given type; an exit status of one is taken to mean that the year is not of the given type. What other types except for "-" are allowed? Parsed files: africa, antarctica, asia, australasia, backward, europe, northamerica, pacificnew, solar87, solar88, solar89, southamerica, Systemv

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Time and the Arts Entry
by Colin Bowern July 19, 2006

July 19, 2006

A song to add to the list... Song: Central Standard Time Artist: The Get Up Kids Album: Eudora (2001) http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:7ddovwvla9xk Cheers, Colin

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Proposed time zone package changes
by Olson, Arthur David (NIH/NCI) [E] July 17, 2006

July 17, 2006

Below are minor proposed time zone package changes; four "public domain" notices are added and the "transition time off by a second" fix circulated previously on the time zone mailing list is incorporated. --ado ------- scheck.c ------- *** /tmp/geta1403 Mon Jul 17 10:26:34 2006 --- /tmp/getb1403 Mon Jul 17 10:26:34 2006 *************** *** 1,6 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)scheck.c 8.18"; #endif /* !defined lint */ #endif /* !defined NOID */ --- 1,11 ---- + /* + ** This file is in the public domain, so clarified as of + ** 2006-07-17 by Arthur David Olson. + */ + #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)scheck.c 8.19"; #endif /* !defined lint */ #endif /* !defined NOID */ ------- ialloc.c ------- *** /tmp/geta1422 Mon Jul 17 10:26:34 2006 --- /tmp/getb1422 Mon Jul 17 10:26:34 2006 *************** *** 1,6 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)ialloc.c 8.29"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 1,11 ---- + /* + ** This file is in the public domain, so clarified as of + ** 2006-07-17 by Arthur David Olson. + */ + #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)ialloc.c 8.30"; #endif /* !defined NOID */ #endif /* !defined lint */ ------- zic.c ------- *** /tmp/geta1441 Mon Jul 17 10:26:35 2006 --- /tmp/getb1441 Mon Jul 17 10:26:35 2006 *************** *** 1,5 **** ! static char elsieid[] = "@(#)zic.c 8.5"; #include "private.h" #include "locale.h" #include "tzfile.h" --- 1,10 ---- ! /* ! ** This file is in the public domain, so clarified as of ! ** 2006-07-17 by Arthur David Olson. ! */ + static char elsieid[] = "@(#)zic.c 8.7"; + #include "private.h" #include "locale.h" #include "tzfile.h" *************** *** 1532,1538 **** for (i = 0; i < timecnt; ++i) { j = leapcnt; while (--j >= 0) ! if (ats[i] >= trans[j]) { ats[i] = tadd(ats[i], corr[j]); break; } --- 1537,1543 ---- for (i = 0; i < timecnt; ++i) { j = leapcnt; while (--j >= 0) ! if (ats[i] > trans[j] - corr[j]) { ats[i] = tadd(ats[i], corr[j]); break; } ------- yearistype.sh ------- *** /tmp/geta1460 Mon Jul 17 10:26:35 2006 --- /tmp/getb1460 Mon Jul 17 10:26:35 2006 *************** *** 1,7 **** #! /bin/sh ! : '@(#)yearistype.sh 8.1' case $#-$1 in 2-|2-0*|2-*[!0-9]*) echo "$0: wild year - $1" >&2 --- 1,10 ---- #! /bin/sh ! : 'This file is in the public domain, so clarified as of' ! : '2006-07-17 by Arthur David Olson.' + : '@(#)yearistype.sh 8.2' + case $#-$1 in 2-|2-0*|2-*[!0-9]*) echo "$0: wild year - $1" >&2

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OT: Return Receipts, was: Re: Chinese timezones 1970
by Steven R. Loomis July 14, 2006

July 14, 2006

Could the TZ reflector remove the header "Disposition-notification- to:"? According to http://www.rfc-editor.org/rfc/rfc2298.txt, this header requests such return receipts. Also see http://support.openwave.com/docs/post_office/docs/PO/FAQ/ faq00007.htm#E196E107 -s On 14 Lul 2006, at 02:37, Dave O'Callaghan wrote: > Return Receipt > > Your Chinese timezones 1970 > document: > > was Dave O'Callaghan/UK/IBM > received > by: > > at: 14/07/2006 10:37:15 > Steven R. Loomis * srl(a)icu-project.org http://ibm.com/software/globalization/icu

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Public Domain Notices
by Mark Davis July 12, 2006

July 12, 2006

We're run into an issue on the ICU project. Some of the code files contain public domain notices, such as tzfile.h /* ** This file is in the public domain, so clarified as of ** 1996-06-05 by Arthur David Olson. */ However, other files, like zic.c are missing that notice. It is our impression that the goal was for all the code to be public domain. What we'd request is: a) an email stating that it is the intention for all the files to be public domain. b) in the next release of the code, for all the files to contain a public domain notice. (If this isn't possible, there are just 2 that we really need it to be on.) Mark

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Re: America/Moncton (2007)
by Paul Eggert July 11, 2006

July 11, 2006

Robbin Kawabata <Robbin.Kawabata(a)eng.sun.com> writes: > Do you plan to put out a tz update (2006h?) soon that includes the > Canada changes? How soon is "soon"? :-) I don't have a schedule and I don't know that Arthur does either. The Moncton and Bermuda changes don't take effect until March 2007, so unless I'm missing something they're not that urgent. The proposed new Zones America/Blanc-Sablon and America/Atikokan do affect current time stamps but these are for small regions that have used standard time for decades (we think) so they normally wouldn't justify a high-priority update. I am hoping for a bit more feedback about these Canadian changes before proposing tz updates. Plus, you never know, those pesky Canadian politicians might change their minds again before next year!

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tzinfo time zones/US states mapping
by Ingo Weiss July 10, 2006

July 10, 2006

Hi, I am just starting to work with tzinfo, and I need to figure out how US states map to tzinfo time zones, or in other words what time zone(s) each US state is in. If anybody has already collected this data and would be willing to share it (and thus save me a couple of hours of work) that would be highly appreciated! Ingo

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Chinese timezones
by Jesper Norgaard Welen July 10, 2006

July 10, 2006

The chinese timezones don't have much description in the tz database. I am currently trying to make a map of the worlds timezones base on the Olson database, and so I miss some more information about what these timezones cover. * Asia/Harbin seems to cover the Heilongjiang region, no less no more. * Asia/Chongqing is a city lying in the Sichuan province, which is huge, so does the timezone represent all of the province? * Asia/Urumqi covers the Xinjiang province, but represents a definition problem since Kashgar also lies in the far western part of this province, so what does timezone Asia/Kashgar represent? Asia/Urumqi timezone according to the comments in the 'asia' file also covers Tibet, which lies in the Xizang province, that is huge stretching from Kashmir to Myanmar, so I don't know if all of this is covered by the Asia/Urumqi timezone alone. * Asia/Shanghai covers all the rest of China as I understand it. This is the timezone there was recently a discussion about changing to Asia/Beijing, I believe. Can anyone shed some light on this? - Jesper Nørgaard Welen

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Oshu tries "DST"; S. Korea considers DST; DST in S. Korea 1949-1961?
by Paul Eggert July 10, 2006

July 10, 2006

In South Korea the Ministry of Commerce, Industry and Energy has commissioned a research project to consider the reintroduction of daylight saving time as early as 2008. See the following articles: http://e.sinchew-i.com/content.phtml?sec=2&artid=200607080000 http://www.koreaherald.co.kr/SITE/data/html_dir/2006/07/10/200607100012.asp The first story says "Korea had a daylight saving program from 1949-61, and again in 1987-88." The second story, by Annie I. Bang, gives a bit more detail: "Korea ran a daylight saving program from 1949-61 but stopped it during the 1950-53 Korean War." We have the 1987-1988 records, but for the earlier period our current database has South Korea observing DST only from May 15 through September 12, 1960. This is from Shanks & Pottenger. If anyone has more detailed info please let me know. A July 3 UPI story reports that citizens of Oshu, Japan set their clocks forward on June 21. They'll move them back August 11. This appears to be an experiment by the local chamber of commerce to get people to go to work an hour earlier, and come home an hour earlier, as part of the "Cool Biz" no-tie, no-jacket campaign that the Japanese environment ministry has been promoting lately. About 50 businesses are changing their clocks, but it does not appear to affect anyone else. Another part of the compaign sets air conditioning thermostats to 28 degrees Celsius at workplaces. Hokkaido has been doing something similar since 2004. Here are references: http://www.upi.com/NewsTrack/view.php?StoryID=20060703-070848-4585r http://www.yomiuri.co.jp/dy/national/20060703TDY09003.htm

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