[tz] [PROPOSED] Add an outline to tz-link.html
Paul Eggert
eggert at cs.ucla.edu
Sat Jun 1 08:30:12 UTC 2019
* tz-link.html: Add an outline, so that it’s more like theory.html.
---
tz-link.html | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 92 insertions(+), 2 deletions(-)
diff --git a/tz-link.html b/tz-link.html
index e0d8cc8..85fc001 100644
--- a/tz-link.html
+++ b/tz-link.html
@@ -18,6 +18,46 @@ histories and planned futures are often recorded only fitfully. Here
is a summary of attempts to organize and record relevant data in this
area.
</p>
+ <h3>Outline</h3>
+ <nav>
+ <ul>
+ <li>The <code><abbr>tz</abbr></code> database product and process
+ <ul>
+ <li><a href="#tzdb">The <code><abbr>tz</abbr></code> database</a></li>
+ <li><a href="#download">Downloading the <code><abbr>tz</abbr></code> database</a></li>
+ <li><a href="#changes">Changes to the <code><abbr>tz</abbr></code> database</a></li>
+ <li><a href="#commentary">Commentary on the <code><abbr>tz</abbr></code> database</a></li>
+ </ul>
+ </li>
+ <li>Uses of the <code><abbr>tz</abbr></code> database
+ <ul>
+ <li><a href="#web">Web sites using recent versions of the <code><abbr>tz</abbr></code> database</a></li>
+ <li><a href="#protocols">Network protocols for <code><abbr>tz</abbr></code> data</a></li>
+ <li><a href="#compilers">Other <code><abbr>tz</abbr></code> compilers</a></li>
+ <li><a href="#TZif">Other <abbr>TZif</abbr> readers</a></li>
+ <li><a href="#software">Other <code><abbr>tz</abbr></code>-based time zone software</a></li>
+ </ul>
+ </li>
+ <li>Related data
+ <ul>
+ <li><a href="#other-dbs">Other time zone databases</a></li>
+ <li><a href="#maps">Maps</a></li>
+ <li><a href="#boundaries">Time zone boundaries</a></li>
+ </ul>
+ </li>
+ <li>Timekeeping concepts
+ <ul>
+ <li><a href="#civil">Civil time concepts and history</a></li>
+ <li><a href="#national">National histories of legal time</a></li>
+ <li><a href="#precision">Precision timekeeping</a></li>
+ <li><a href="#notation">Time notation</a></li>
+ <li><a href="#see-also">See also</a></li>
+ </ul>
+ </li>
+ </ul>
+ </nav>
+
+<section>
<h2 id="tzdb">The <code><abbr title="time zone">tz</abbr></code> database</h2>
<p>
The <a href="https://en.wikipedia.org/wiki/Public_domain">public-domain</a>
@@ -88,6 +128,9 @@ Universal Time</a> (<abbr>UTC</abbr>).
The database also records when daylight saving time was in use,
along with some time zone abbreviations such as <abbr>EST</abbr>
for Eastern Standard Time in the <abbr>US</abbr>.</p>
+</section>
+
+<section>
<h2 id="download">Downloading the <code><abbr>tz</abbr></code> database</h2>
<p>
The following <a
@@ -148,6 +191,9 @@ specified by <a href="https://tools.ietf.org/html/8536">Internet
The code also lets
you read a <abbr>TZif</abbr> file and interpret timestamps for that
location.</p>
+</section>
+
+<section>
<h2 id="changes">Changes to the <code><abbr>tz</abbr></code> database</h2>
<p>
The <code><abbr>tz</abbr></code> code and data
@@ -226,6 +272,9 @@ found in <a href="theory.html">Theory and pragmatics of the tz code and data</a>
<a href="https://a0.github.io/a0-tzmigration/">A0 TimeZone Migration</a>
displays changes between recent <code><abbr>tzdb</abbr></code> versions.
</p>
+</section>
+
+<section>
<h2 id="commentary">Commentary on the <code><abbr>tz</abbr></code> database</h2>
<ul>
<li>The article
@@ -239,6 +288,9 @@ href="https://blog.jonudell.net/2009/10/23/a-literary-appreciation-of-the-olsonz
literary appreciation of the Olson/Zoneinfo/tz database</a> comments on the
database's style.</li>
</ul>
+</section>
+
+<section>
<h2 id="web">Web sites using recent versions of the
<code><abbr>tz</abbr></code> database</h2>
<p>
@@ -270,6 +322,9 @@ calculates the current time difference between locations.</li>
<li><a href="http://www.wx-now.com">Weather Now</a> and
<a href="http://www.thetimenow.com">The Time Now</a> list the weather too.</li>
</ul>
+</section>
+
+<section>
<h2 id="protocols">Network protocols for <code><abbr>tz</abbr></code> data</h2>
<ul>
<li>The <a href="https://www.ietf.org">Internet Engineering Task Force</a>'s
@@ -302,6 +357,9 @@ title="Extensible Markup Language">XML</abbr></a> format, and a variant
uses <a href="https://www.json.org"><abbr
title="JavaScript Object Notation">JSON</abbr></a> format.</li>
</ul>
+</section>
+
+<section>
<h2 id="compilers">Other <code><abbr>tz</abbr></code> compilers</h2>
<ul>
<li><a href="https://sourceforge.net/projects/vzic/">Vzic</a> is a <a
@@ -439,6 +497,9 @@ source into text files, along with a runtime that can read those
files. Tcl is freely available under a <abbr>BSD</abbr>-style
license.</li>
</ul>
+</section>
+
+<section>
<h2 id="TZif">Other <abbr>TZif</abbr> readers</h2>
<ul>
<li>The <a
@@ -497,6 +558,9 @@ package contains <a href="https://www.haskell.org">Haskell</a> code that
parses and uses <abbr>TZif</abbr> data. It is freely
available under a <abbr>BSD</abbr>-style license.</li>
</ul>
+</section>
+
+<section>
<h2 id="software">Other <code><abbr>tz</abbr></code>-based time zone software</h2>
<ul>
<li><a href="https://foxclocks.org">FoxClocks</a>
@@ -554,6 +618,9 @@ a macOS program. Its developers
<a href="http://veladg.com/tzoffer.html">offer free
licenses</a> to <code><abbr>tz</abbr></code> contributors.</li>
</ul>
+</section>
+
+<section>
<h2 id="other-dbs">Other time zone databases</h2>
<ul>
<li><a href="https://www.astro.com/atlas">Time-zone Atlas</a>
@@ -582,6 +649,9 @@ Schedules Information Manual</a> of the
International Air Transport Association
gives current time zone rules for airports served by commercial aviation.</li>
</ul>
+</section>
+
+<section>
<h2 id="maps">Maps</h2>
<ul>
<li>The <a href="https://www.cia.gov/index.html">United States Central
@@ -609,6 +679,9 @@ much is time wrong around the world?</a> maps the difference between
mean solar and standard time, highlighting areas such as western China
where the two differ greatly. It's a bit out of date, unfortunately.</li>
</ul>
+</section>
+
+<section>
<h2 id="boundaries">Time zone boundaries</h2>
<p>Geographical boundaries between timezones are available
from several <a href="https://en.wikipedia.org/wiki/Geolocation">geolocation</a>
@@ -683,6 +756,9 @@ for land and territorial waters only). A captain can change ship's
clocks any time after entering a new time zone; midnight changes are
common.</li>
</ul>
+</section>
+
+<section>
<h2 id="civil">Civil time concepts and history</h2>
<ul>
<li><a href="https://www.nist.gov/pml/time-and-frequency-division/popular-links/walk-through-time">A
@@ -704,6 +780,9 @@ time zone boundary.</li>
<li><a href="http://statoids.com/tconcept.html">Basic Time
Zone Concepts</a> discusses terminological issues behind time zones.</li>
</ul>
+</section>
+
+<section>
<h2 id="national">National histories of legal time</h2>
<dl>
<dt>Australia</dt>
@@ -790,6 +869,9 @@ Navy (SOHMA) publishes an annual <a
href="http://www.armada.gub.uy/sohma/index.php/servicios/datos-astronomicos" hreflang="es">almanac
(in Spanish)</a>.</dd>
</dl>
+</section>
+
+<section>
<h2 id="precision">Precision timekeeping</h2>
<ul>
<li><a
@@ -878,6 +960,9 @@ without Leap Seconds</a> gives pointers on this
contentious issue, which was active until 2015 and could become active
again.</li>
</ul>
+</section>
+
+<section>
<h2 id="notation">Time notation</h2>
<ul>
<li>The <a id="CLDR" href="http://cldr.unicode.org">Unicode Common Locale Data
@@ -946,18 +1031,23 @@ any future changes to the rules. One should never set
local time is nine hours ahead of <abbr>UT</abbr> and the time zone
is called "<abbr>GMT</abbr>".</li>
</ul>
+</section>
+
+<section>
<h2 id="see-also">See also</h2>
<ul>
<li><a href="theory.html">Theory and pragmatics of the tz code and data</a></li>
<li><a href="tz-art.html">Time and the Arts</a></li>
</ul>
+</section>
+
+<footer>
<hr>
-<address>
This web page is in the public domain, so clarified as of
2009-05-17 by Arthur David Olson.
<br>
Please send corrections to this web page to the
<a href="mailto:tz at iana.org">time zone mailing list</a>.
-</address>
+</footer>
</body>
</html>
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2.17.1
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