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YouTube videos on time zones
by Matt Johnson March 8, 2016

March 8, 2016

If these two aren't in our art file, they probably should be. "Daylight Saving Time Explained" - CGP Grey https://youtu.be/84aWtseb2-4 Among other things, explains Arizona's enclaves and exclaves quite well. "The Problem with Time & Timezones" - Computerphile / Tom Scott https://youtu.be/-5wpm-gesOY Though Tom gets Nepal's time zone offset wrong - can you blame him?

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field separators in tzdata2016a.tar.gz
by Joris Wu March 8, 2016

March 8, 2016

Dear reader, While writing a Perl script to parse the original TZ data files, I discovered that most fields are separated by tab characters ( ASCII 09 ), yet some by spaces. Given the frequency, I expect tabs were the intended separator. It makes parsing less ambiguous anyhow. I converted a set of space separators in attached patches. Not all, as I do not know yet what is the intent here. Regards, Joris Software developer Brisbane

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[PATCH 1/1] Document tzselect std out redirection
by J William Piggott March 7, 2016

March 7, 2016

* tzselect.8: Implement this. Signed-off-by: J William Piggott <elseifthen(a)gmx.com> --- Question: What does the following sentence from this man-page mean? NOTES Applications should not assume that tzselect's output matches the user's political preferences. How can a TZ string define ones political preference? tzselect.8 | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/tzselect.8 b/tzselect.8 index fb39e1f..19f63bb 100644 --- a/tzselect.8 +++ b/tzselect.8 @@ -19,10 +19,16 @@ tzselect \- select a time zone .SH DESCRIPTION The .B tzselect -program asks the user for information about the current location, -and outputs the resulting time zone description to standard output. +program asks the user for information about a target location, +and outputs the corresponding time zone description to standard output. The output is suitable as a value for the TZ environment variable. .PP +If standard output is redirected to anything other than a terminal, +then the instructions following the confirmation prompt are not printed. +This is to facilitate calling +.B tzselect +from another program. +.PP All interaction with the user is done via standard input and standard error. .SH OPTIONS .TP

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tzcode: please rename the "new" argument in icatalloc()
by Markus Scherer March 7, 2016

March 7, 2016

tzcode/private.h has this declaration: char * icatalloc(char * old, const char * new); The "new" identifier prevents it from being compiled with a C++ compiler. Would you mind renaming the second argument? Thanks! markus

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[PATCH] POSIX TZ string validation bug
by J William Piggott March 7, 2016

March 7, 2016

Invalid Julian date of J00 passes. POSIX indicates that there should be no zero padding on 'Julian' dates: Jn The Julian day n (1 <= n <= 365). n The zero-based Julian day (0 <= n <= 365). * tzselect.ksh: Implement this. Signed-off-by: J William Piggott <elseifthen(a)gmx.com> --- tzselect.ksh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tzselect.ksh b/tzselect.ksh index ba763e7..d2c3a6d 100644 --- a/tzselect.ksh +++ b/tzselect.ksh @@ -351,8 +351,8 @@ while "(:[0-5][0-9](:[0-5][0-9])?)?" offset = "[-+]?" time mdate = "M([1-9]|1[0-2])\\.[1-5]\\.[0-6]" - jdate = "((J[1-9]|[0-9]|J?[1-2]?[0-9][0-9])" \ - "|J?3[0-5][0-9]|J?36[0-5])" + jdate = "((J[1-9]|[0-9]|J?[1-9][0-9]" \ + "|J?[1-2][0-9][0-9])|J?3[0-5][0-9]|J?36[0-5])" datetime = ",(" mdate "|" jdate ")(/" time ")?" tzpattern = "^(:.*|" tzname offset "(" tzname \ "(" offset ")?(" datetime datetime ")?)?)$"

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[PROPOSED PATCH] Add xkcd
by Paul Eggert March 6, 2016

March 6, 2016

* tz-art.htm: Add xkcd. Add URLs for specific comic strips or panels. --- tz-art.htm | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/tz-art.htm b/tz-art.htm index 57d9092..127ab69 100644 --- a/tz-art.htm +++ b/tz-art.htm @@ -353,10 +353,17 @@ broadcast 1997-02-13, in which Kramer decides that daylight saving time isn't coming fast enough, so he sets his watch ahead an hour. </li> <li> -The syndicated comic strip Dilbert featured an all-too-rare example of -time zone humor on 1998-03-14. +The syndicated comic strip Dilbert featured an +<a href='http://dilbert.com/strip/1998-03-14'>all-too-rare example of +time zone humor</a> on 1998-03-14. </li> <li> +The webcomic xkcd has the strip +"<a href='https://xkcd.com/673/'>The Sun</a>" (2009-12-09) and the panels +"<a href='https://xkcd.com/1017/'>Backward in Time</a>" (2012-02-14), +"<a href='https://xkcd.com/1061/'>EST</a>" (2012-05-28), and +"<a href='https://xkcd.com/1335/'>Now</a>" (2014-02-26). +<li> Surrealist artist Guy Billout's work "Date Line" appeared on page 103 of the 1999-11 Atlantic Monthly. </li> @@ -515,7 +522,7 @@ Peppermint Patty: "What if the world comes to an end tonight, Marcie?" Marcie: "I promise there'll be a tomorrow, sir ... in fact, it's already tomorrow in Australia!" -(Charles M. Schulz, Peanuts, 1980-06-13) +(Charles M. Schulz, <a href='http://www.gocomics.com/peanuts/1980/06/13'>Peanuts, 1980-06-13</a>) </li> </ul> </body> -- 2.5.0

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Time Lord Judah Levine
by Brian Inglis March 4, 2016

March 4, 2016

Wondered if you might want to give a mention in one of the HTML docs to the person responsible for providing our leap-seconds.list from NIST (courtesy of Tom Van Baak on Time-Nuts): https://www.febo.com/pipermail/time-nuts/2016-March/096401.html a couple of the articles quoted are more textual rather than Youtube link introductions: https://jila.colorado.edu/faculty/judah-levine http://cuindependent.com/2011/08/23/the-nations-time-lord/ -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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[PATCH] Broken link: Website has disappeared
by Sanjeev March 1, 2016

March 1, 2016

* tz-link.htm --- tz-link.htm | 3 --- 1 file changed, 3 deletions(-) diff --git a/tz-link.htm b/tz-link.htm index bd92f64..c519669 100644 --- a/tz-link.htm +++ b/tz-link.htm @@ -200,9 +200,6 @@ time zone converter.</li> <li><a href="http://twiki.org/cgi-bin/xtra/tzdatepick.html">Date and Time Gateway</a> lets you see the <code><abbr>TZ</abbr></code> values directly.</li> -<li><a -href="http://convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current -Time in 1000 Places</a> uses descriptions of the values.</li> <li><a href="http://www.timezoneconverter.com/cgi-bin/tzc.tzc">Time Zone Converter</a> uses a pulldown menu.</li> -- 2.7.0

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2015g: Is the 1:00 under Pacific/Norfolk "Rules" a typo?
by Marvel, Jim (CPCOE) March 1, 2016

March 1, 2016

Hello, Is the 1:00 under Pacific/Norfolk "Rules" a typo? # Norfolk # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston 11:12 - NMT 1951 # Norfolk Mean Time 11:30 - NFT 1974 Oct 27 02:00 # Norfolk T. 11:30 1:00 NFST 1975 Mar 2 02:00 11:30 - NFT 2015 Oct 4 02:00 11:00 - NFT thanks Jim Marvel

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[PROPOSED PATCH] * NEWS: × → x, to pacify ‘make check_character_set’.
by Paul Eggert Feb. 28, 2016

Feb. 28, 2016

--- NEWS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/NEWS b/NEWS index f3499d7..e4dc2b5 100644 --- a/NEWS +++ b/NEWS @@ -31,7 +31,7 @@ Unreleased, experimental changes Comments in zone tables have been improved. (Thanks to J William Piggott.) tzselect again limits its menu comments so that menus fit on a - 24×80 alphanumeric display. + 24x80 alphanumeric display. In the Theory file, the description of possible time zone abbreviations in tzdata has been cleaned up, as the old description was unclear and -- 2.5.0

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