[tz] [PROPOSED 1/2] Streamline tz-link a bit

[Paul Eggert]

* 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