* tz-link.htm: Add commentary section. Update URLs and titles. Add links to Firefox OS, Bill Seymour's intro, Jon Udell's appreciation, W3C's "Working with Time Zones". --- tz-link.htm | 41 ++++++++++++++++++++++++++++------------- 1 file changed, 28 insertions(+), 13 deletions(-) diff --git a/tz-link.htm b/tz-link.htm index 008946e..9eea060 100644 --- a/tz-link.htm +++ b/tz-link.htm @@ -8,7 +8,7 @@ <meta http-equiv="Content-type" content='text/html; charset="US-ASCII"'> <meta name="DC.Creator" content="Eggert, Paul"> <meta name="DC.Contributor" content="Olson, Arthur David"> -<meta name="DC.Date" content="2013-05-10"> +<meta name="DC.Date" content="2013-07-03"> <meta name="DC.Description" content="Sources of information about time zones and daylight saving time"> <meta name="DC.Identifier" @@ -31,8 +31,7 @@ href="http://en.wikipedia.org/wiki/Coordinated_Universal_Time"><abbr title="Coordinated Universal Time">UTC</abbr></a> offsets, and <a href="http://en.wikipedia.org/wiki/Daylight_saving">daylight-saving</a> rules. -This database (often called <code>zoneinfo</code> or <a -href="http://en.wikipedia.org/wiki/Tz_database"><code>tz</code></a>) +This database (often called <code>zoneinfo</code> or <code>tz</code>) is used by several implementations, including <a href="http://www.gnu.org/software/libc/">the @@ -40,6 +39,8 @@ including C Library</a> (used in <a href="http://www.linux.org/"><abbr>GNU</abbr>/Linux</a>), <a href="http://www.android.com/">Android</a>, +<a href="https://developer.mozilla.org/en-US/docs/Mozilla/Firefox_OS">Firefox +OS</a>, <a href="http://www.freebsd.org/">FreeBSD</a>, <a href="http://netbsd.org/">NetBSD</a>, <a href="http://openbsd.org/">OpenBSD</a>, @@ -134,6 +135,17 @@ For Comments">RFC</abbr> 6557).</p> The Web has several other sources for time zone and daylight saving time data. Here are some links that may be of interest. </p> +<h2>Commentary on the <code>tz</code> database</h2> +<ul> +<li>The article +<a href="http://en.wikipedia.org/wiki/Tz_database">tz database</a> is +an encyclopedic summary.</li> +<li><a href="http://www.cstdbill.com/tzdb/tz-how-to.html">How to Read the +tz Database Source Files</a> explains the tz database format.</li> +<li><a href="http://blog.jonudell.net/2009/10/23/a-literary-appreciation-of-the-olsonzoneinfotz-database/">A +literary appreciation of the Olson/Zoneinfo/tz database</a> comments on the +database's style.</li> +</ul> <h2>Web sites using recent versions of the <code>tz</code> database</h2> <p> These are listed roughly in ascending order of complexity and fanciness. @@ -176,8 +188,8 @@ href="http://calconnect.org/publications/icalendartimezoneproblemsandrecommendat TIMEZONE Problems and Recommendations</a> offers guidelines and recommendations for the use of VTIMEZONE and <code>tz</code>.</li> <li><a href="http://calconnect.org/dstlinks.shtml">Extended Daylight -Saving Time Links, Advisories and Changes</a> lists vendor material on recent -daylight saving time changes.</li> +Saving Time Links, Advisories and Changes</a> lists vendor material on 2007 +U.S. daylight saving time changes.</li> <li><a href="http://calconnect.org/publications/timezoneregistryandservicerecommendationsv1.0.pdf">Timezone Registry and Service Recommendations</a> discusses a @@ -235,16 +247,16 @@ contains a class <code>org.joda.time.tz.ZoneInfoCompiler</code> that compiles <code>tz</code> source into a Joda-specific binary format. Joda Time is freely available under a <abbr>BSD</abbr>-style license.</li> -<li><a href="http://pytz.sourceforge.net">PyTZ - Python Time -Zone Library</a> compiles <code>tz</code> source into +<li><a href="http://pytz.sourceforge.net">pytz - World Timezone +Definitions for Python</a> compiles <code>tz</code> source into <a href="http://python.org/">Python</a>. It is freely available under a <abbr>BSD</abbr>-style license.</li> <li><a href="http://tzinfo.rubyforge.org/">TZInfo - Ruby Timezone Library</a> compiles <code>tz</code> source into -<a href="http://ruby-lang.org">Ruby</a>. +<a href="http://www.ruby-lang.org/en/">Ruby</a>. It is freely available under the <abbr title="Massachusetts Institute of Technology">MIT</abbr> license.</li> -<li>The <a href="http://chronos-st.org/">Chronos Date/Time +<li>The <a href="http://www.squeaksource.com/Chronos/">Chronos Date/Time Library</a> is a <a href="http://en.wikipedia.org/wiki/Smalltalk">Smalltalk</a> class library that compiles <code>tz</code> source into a time zone repository whose format @@ -331,7 +343,7 @@ time zone history atlases published in both <a href="http://astrocom.com/astrology-products/software/acs-atlas-software">computer</a> and book form (<a href="http://www.astrocom.com/astrology/books/american-atlas">one volume -for the USA</a>, and <a +for the U.S.</a>, and <a href="http://www.astrocom.com/astrology/books/international-atlas">one for other locations</a>) by <a href="http://astrocom.com/">Astro Computing Services</a>.</li> @@ -421,6 +433,9 @@ surveys the evolution of timekeeping.</li> <li><a href="http://webexhibits.org/daylightsaving/">About Daylight Saving Time - History, rationale, laws & dates</a> is an overall history of <abbr>DST</abbr>.</li> +<li><a href="http://www.w3.org/TR/timezone/">Working with Time Zones</a> +contains guidelines and best practices for software applications that +deal with civil time.</li> <li><a href="http://energy.ca.gov/daylightsaving.html">Saving Time, Saving Energy</a> discusses a primary justification for <abbr>DST</abbr>.</li> <li><a href="http://seizethedaylight.com/dst/">A Brief @@ -499,7 +514,7 @@ href="http://www.polyomino.org.uk/british-time/">History of legal time in Britain</a> discusses in detail the country with perhaps the best-documented history of clock adjustments. The National Physical Laboratory also maintains an <a -href="http://www.npl.co.uk/educate-explore/what-is-the-time/archive-of-summer-time-dates-1916-2006">Archive +href="http://www.npl.co.uk/educate-explore/what-is-time/archive-of-summer-time-dates-1916-2006">Archive of Summer time dates</a>.</dd> </dl> <h2>Precision timekeeping</h2> @@ -578,8 +593,8 @@ contentious issue.</li> <h2>Time notation</h2> <ul> <li> -<a href="http://www.cl.cam.ac.uk/~mgk25/iso-time.html">A Summary of -the International Standard Date and Time Notation</a> is a good +<a href="http://www.cl.cam.ac.uk/~mgk25/iso-time.html">A summary of +the international standard date and time notation</a> is a good summary of <a href="http://www.iso.org/iso/catalogue_detail?csnumber=40874"><abbr -- 1.8.1.2