[PROPOSED 1/2] Streamline tz-link a bit
* tz-link.html: Defer to the Timezone Boundary Builder web page for a list of libraries that use it, as its list is larger and better-maintained than ours. Mention how old the Manifold map is. Mention WRC 2023 resolution on leap seconds. --- tz-link.html | 36 ++++++++---------------------------- 1 file changed, 8 insertions(+), 28 deletions(-) diff --git a/tz-link.html b/tz-link.html index 78c266ee..9fb57c90 100644 --- a/tz-link.html +++ b/tz-link.html @@ -787,32 +787,9 @@ boundaries of <code><abbr>tzdb</abbr></code> timezones. Its code is freely available under the <abbr>MIT</abbr> license, and its data entries are freely available under the <a href="https://opendatacommons.org/licenses/odbl/">Open Data Commons -Open Database License</a>. The maps' borders appear to be quite accurate.</li> -<li>Programmatic interfaces that map geographical coordinates via tz_world to -<code><abbr>tzdb</abbr></code> timezones include: -<ul> -<li><a href="https://github.com/mj1856/GeoTimeZone">GeoTimeZone</a> is -written in <a -href="https://en.wikipedia.org/wiki/C_Sharp_(programming_language)">C#</a> -and is freely available under the <abbr>MIT</abbr> license.</li> -<li>The <a href="https://github.com/bradfitz/latlong">latlong package</a> -is written in Go and is freely available under the Apache License.</li> -<li><a href="https://github.com/drtimcooper/LatLongToTimezone">LatLongToTimezone</a>, -in both Java and -<a href="https://en.wikipedia.org/wiki/Swift_(programming_language)">Swift</a> -form, is freely available under the MIT license.</li> -<li>For Node.js, -the <a href="https://www.npmjs.com/package/geo-tz">geo-tz module</a> -is freely available under the MIT license, and -the <a href="https://www.npmjs.com/package/tz-lookup">tz-lookup module</a> -is in the public domain.</li> -<li>The <a -href="https://github.com/MrMinimal64/timezonefinder">timezonefinder</a> -library for Python is freely available under the MIT license. -<li>The <a -href="https://github.com/gunyarakun/timezone_finder">timezone_finder</a> -library for Ruby is freely available under the MIT license.</li> -</ul></li> +Open Database License</a>. The borders appear to be quite accurate. +Its main web page lists more than twenty libraries +for looking up a timezone name from a GPS coordinate.</li> <li>Free access via a network API, if you register a key, is provided by the <a href="https://www.geonames.org/export/web-services.html#timezone">GeoNames @@ -833,7 +810,7 @@ Divisions of Countries ("Statoids")</a> lists political subdivision data related to time zones.</li> <li><a href="https://manifold.net/info/freestuff.shtml">Manifold Software – GIS and Database Tools</a> includes a Manifold-format map of -world time zone boundaries distributed under the +world time zone boundaries circa 2007, distributed under the <abbr>GPL</abbr>.</li> <li>A ship within the <a href="https://en.wikipedia.org/wiki/Territorial_waters">territorial @@ -1133,9 +1110,12 @@ might be redefined without Leap Seconds</a> gives pointers on this contentious issue. The General Conference on Weights and Measures -<a href="https://www.bipm.org/en/cgpm-2022/resolution-4">voted in 2022</a> +<a href="https://www.bipm.org/en/cgpm-2022/resolution-4">decided in 2022</a> to discontinue the use of leap seconds by 2035, replacing them with an as-yet-undetermined scheme some time after the year 2135. +The World Radiocommunication Conference <a +href="https://www.itu.int/dms_pub/itu-r/opb/act/R-ACT-WRC.15-2023-PDF-E.pdf">resolved +in 2023</a> to cooperate with this process. </li> </ul> </section> -- 2.40.1
--- theory.html | 2 +- tz-art.html | 12 ++++++------ 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/theory.html b/theory.html index 318b6c25..516d2a52 100644 --- a/theory.html +++ b/theory.html @@ -770,7 +770,7 @@ href="https://www.dissentmagazine.org/blog/booked-a-global-history-of-time-vanes calendar with 24-hour days. These divergences range from relatively minor, such as Japanese bars giving times like "24:30" for the wee hours of the morning, to more-significant differences such as <a - href="https://www.pri.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time">the + href="https://theworld.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time">the east African practice of starting the day at dawn</a>, renumbering the Western 06:00 to be 12:00. These practices are largely outside the scope of the <code><abbr>tz</abbr></code> code and data, which diff --git a/tz-art.html b/tz-art.html index 2131cfd4..3ee1eb24 100644 --- a/tz-art.html +++ b/tz-art.html @@ -210,7 +210,7 @@ Umberto Eco, Island of the Day Before</em></a> (<em>L'isola del giorno prima</em>), 1994. "...the story of a 17th century Italian nobleman trapped near an island -on the International Date Line. Time and time zones play an integral +on the International Date Line. Time and time zones play an integral part in the novel." (Paul Eggert, 2006-04-22) </li> <li> @@ -293,7 +293,7 @@ ADO ★★⯪, </li> <li> Milt Hinton, -<a href="http://www.chiaroscurojazz.com/album.php?C=310"><em>Old +<a href="https://chiaroscurojazz.org/catalog/old-man-time-2-cd-set/"><em>Old Man Time</em></a> (1990). Chiaroscuro CR(D) 310, 149:38 (two CDs). Milt Hinton, bass; @@ -556,10 +556,10 @@ entitled "The Kid," originally aired 1997-11-04) </li> <li> "I put myself and my staff through this crazy, huge ordeal, all because -I refused to go on at midnight, okay? And so I work, you know, and -then I get this job at eleven, supposed to be a big deal. Then +I refused to go on at midnight, okay? And so I work, you know, and +then I get this job at eleven, supposed to be a big deal. Then yesterday daylight [saving] time ended. Right now it's basically -midnight." (Conan O'Brien on the 2010-11-08 premiere of <em>Conan</em>.) +midnight." (Conan O'Brien on the 2010-11-08 premiere of <em>Conan</em>) </li> <li> "The best method, I told folks, was to hang a large clock high on a @@ -567,7 +567,7 @@ barn wall where all the cows could see it. If you have Holsteins, you will need to use an analog clock." (Jerry Nelson, <a href="http://www.agriculture.com/family/farm-humor/how-to-adjust-dairy-cows-to-daylight-savings-time">How to adjust dairy cows to daylight saving time</a>", <em>Successful Farming</em>, -2017-10-09.) +2017-10-09) </li> <li> "And now, driving to California, I find that I must enter a password -- 2.40.1
On 2024-02-01 01:09, Paul Eggert via tz wrote: ...
The General Conference on Weights and Measures -<a href="https://www.bipm.org/en/cgpm-2022/resolution-4">voted in 2022</a> +<a href="https://www.bipm.org/en/cgpm-2022/resolution-4">decided in 2022</a> to discontinue the use of leap seconds by 2035, replacing them with an as-yet-undetermined scheme some time after the year 2135.
I would keep the official bureaucratic weasel words: "requests...consult...propose a new maximum value for the difference (UT1-UTC) that will ensure the continuity of UTC for at least a century" which hopefully might be agreed by 2035, unless anyone with a big stick, or who can raise a big political stink, disrupt it, like conservative, including religious, groups, who may feel their beliefs, standards, influence, or power are being threatened: just like the last 20-50 years!
+The World Radiocommunication Conference <a +href="https://www.itu.int/dms_pub/itu-r/opb/act/R-ACT-WRC.15-2023-PDF-E.pdf">resolved +in 2023</a> to cooperate with this process.
It seems that telecommunications organizations have little to no role to play in disseminating any modern time or frequency standards, except regulators who need to keep GNSS bands free of all interference terrestrial or extra-terrestrial? -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut -- Antoine de Saint-Exupéry
On 2024-02-01 08:02, brian.inglis--- via tz wrote:
I would keep the official bureaucratic weasel words:
Ironically, I changed tz-link's "voted" to "decided" to use the exact word "decided" that the GCPM used....
"requests...consult...propose a new maximum value for the difference (UT1-UTC) that will ensure the continuity of UTC for at least a century"
I installed the attached proposed patch to try to do that. Unfortunately <https://www.bipm.org/en/cgpm-2022/resolution-4> is written so bureaucratically that it's hard to understand what it means. At its core I think it means "We decide to discontinue leap seconds by 2035" and "maybe our descendants will do something different". I've tried to write this meaning plainly rather than to slip into too much bureaucratese.
participants (2)
-
brian.inglis＠systematicsw.ab.ca -
Paul Eggert