[tz] [PROPOSED PATCH] Update HTML documentation
Paul Eggert
eggert at cs.ucla.edu
Fri Sep 9 08:37:39 UTC 2016
* NEWS: Mention this.
* tz-art.htm: Reorder sections to make the order more logical.
Use list style for TV episodes and books.
* tz-link.htm: Update description of local time on Mars
to match current practice. Remove obsolete URLs and
update URLs that moved.
---
NEWS | 4 +-
tz-art.htm | 388 ++++++++++++++++++++++++++++--------------------------------
tz-link.htm | 92 +++++---------
3 files changed, 212 insertions(+), 272 deletions(-)
diff --git a/NEWS b/NEWS
index 64233bf..7d994c5 100644
--- a/NEWS
+++ b/NEWS
@@ -114,7 +114,9 @@ Unreleased, experimental changes
tz-link.htm mentions JuliaTime (thanks to Curtis Vogt) and Time4J
(thanks to Meno Hochschild) and ThreeTen-Extra, and its
description of Java 8 has been brought up to date (thanks to
- Stephen Colebourne).
+ Stephen Colebourne). Its description of local time on Mars has
+ been updated to match current practice, and URLs have been updated
+ and some obsolete ones removed.
Release 2016f - 2016-07-05 16:26:51 +0200
diff --git a/tz-art.htm b/tz-art.htm
index 08ef562..0a2b427 100644
--- a/tz-art.htm
+++ b/tz-art.htm
@@ -24,6 +24,184 @@ into problems that programmers have with timekeeping.</li>
Bell Science extravaganza, with Frank Baxter, Richard Deacon, and Les Tremayne.
(<a href="http://www.imdb.com/title/tt0154110/">IMDb entry</a>.)</li>
</ul>
+<h2>Movies</h2>
+<ul>
+<li>
+In the 1946 movie <em>A Matter of Life and Death</em>
+(U.S. title <em>Stairway to Heaven</em>)
+there is a reference to British Double Summer Time.
+The time does not play a large part in the plot;
+it's just a passing reference to the time when one of the
+characters was supposed to have died (but didn't).
+The IMDb page is at
+<a href="http://us.imdb.com/title/tt0038733/">
+http://us.imdb.com/title/tt0038733/
+</a>. (Dave Cantor)
+<li>
+The 1953 railway comedy movie <em>The Titfield Thunderbolt</em> includes a
+play on words on British Double Summer Time. Valentine's wife wants
+him to leave the pub and asks him, "Do you know what time it is?"
+And he, happy where he is, replies: "Yes, my love. Summer double time."
+IMDb page:
+<a href="http://us.imdb.com/title/tt0046436/">
+http://us.imdb.com/title/tt0046436/
+</a>. (Mark Brader, 2009-10-02)
+</li>
+<li>
+The premise of the 1999 caper movie <em>Entrapment</em> involves computers
+in an international banking network being shut down briefly at
+midnight in each time zone to avoid any problems at the transition
+from the year 1999 to 2000 in that zone. (Hmmmm.) If this shutdown
+is extended by 10 seconds, it will create a one-time opportunity for
+a gigantic computerized theft. To achieve this, at one location the
+crooks interfere with the microwave system supplying time signals to
+the computer, advancing the time by 0.1 second each minute over the
+last hour of 1999. (So this movie teaches us that 0.1 × 60 = 10.)
+IMDb page:
+<a href="http://us.imdb.com/title/tt0137494/">
+http://us.imdb.com/title/tt0137494/
+</a>. (Mark Brader, 2009-10-02)
+</li>
+<li>
+One mustn't forget the
+<a href="https://www.youtube.com/watch?v=k4EUTMPuvHo">trailer</a>
+(2014; 2:23) for the movie <em>Daylight Saving</em>.
+</li>
+</ul>
+<h2>TV episodes</h2>
+<ul>
+<li>
+An episode of <em>The Adventures of Superman</em> entitled "The Mysterious
+Cube," first aired 1958-02-24, had Superman convincing the controllers
+of the Arlington Time Signal to broadcast ahead of actual time;
+doing so got a crook trying to be declared dead to
+emerge a bit too early from the titular enclosure.
+</li>
+<li>
+The 1960s ITC television series <em>The Prisoner</em> included an episode
+entitled "The Chimes of Big Ben" in which our protagonist tumbled to
+the fraudulent nature of a Poland-to-England escape upon hearing "Big
+Ben" chiming on Polish local time.
+</li>
+<li>
+The series <em>Seinfeld</em> included an episode entitled "The Susie," first
+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 "20 Hours in America" episode of <em>The West Wing</em>,
+first aired 2002-09-25, contained a <a
+href="https://www.youtube.com/watch?v=-J1NHzQ1sgc">scene</a> that
+saw White House staffers stranded in Indiana; they thought they had time to
+catch Air Force One but were done in by intra-Indiana local time changes.
+</li>
+<li>
+"In what time zone would you find New York City?" was a $200 question on
+the 1999-11-13 United States airing of <em>Who Wants to Be a Millionaire?</em>,
+and "In 1883, what industry led the movement to divide the U.S. into four time
+zones?" was a $32,000 question on the 2001-05-23 United States airing of
+the same show. At this rate, the million-dollar time-zone
+question should have been asked 2002-06-04.
+</li>
+<li>
+A private jet's mid-flight change of time zones distorts Alison Dubois'
+premonition in the "We Had a Dream" episode of <em>Medium</em>
+(originally aired 2007-02-28).
+</li>
+<li>
+In the <em>30 Rock</em> episode "Anna Howard Shaw Day"
+(first broadcast 2010-02-11),
+Jack Donaghy's date realizes that a Geneva-to-New-York business phone call
+received in the evening must be fake given the difference in local times.
+</li>
+<li>
+In the "Run by the Monkeys" episode of <em>Da Vinci's Inquest</em>
+(first broadcast 2002-11-17),
+a witness in a five-year-old fire case realizes they may not have set
+their clock back when daylight saving ended on the day of the fire,
+introducing the possibility of an hour when arson might have occurred.
+</li>
+<li>
+In "The Todd Couple" episode of <em>Outsourced</em> (first aired 2011-02-10),
+Manmeet sets up Valentine's Day teledates for 6:00 and 9:00pm;
+since one is with a New Yorker and the other with a San Franciscan,
+hilarity ensues.
+(Never mind that this should be 7:30am in Mumbai, yet for some reason the show
+proceeds as though it's also mid-evening there.)
+</li>
+<li>
+In the "14 Days to Go"/"T Minus..." episode of
+<em>You, Me and the Apocalypse</em>
+(first aired 2015-11-11 in the UK, 2016-03-10 in the US),
+the success of a mission to deal with a comet
+hinges on whether or not Russia observes daylight saving time.
+(In the US, the episode first aired in the week before the switch to DST.)
+</li>
+<li>
+"The Lost Hour", <em>Eerie, Indiana</em>, episode 10, NBC, 1991-12-01.
+Despite Indiana's then-lack of DST, Marshall changes his clock with
+unusual consequences.
+</li>
+<li>
+"Time Tunnel", <em>The Adventures of Pete & Pete</em>, season 2, episode 5,
+Nickelodeon, 1994-10-23.
+The two Petes travel back in time an hour on the day that DST ends.
+</li>
+<li>
+"King-Size Homer", <em>The Simpsons</em>, episode 135, Fox, 1995-11-05.
+Homer, working from home, remarks "8:58, first
+time I've ever been early for work. Except for all those daylight
+savings days. Lousy farmers."
+</li>
+<li>
+"Tracks", <em>The Good Wife</em>, season 7, episode 12,
+CBS, 2016-01-17.
+The applicability of a contract hinges on the
+time zone associated with a video time stamp.
+</li>
+</ul>
+<h2>Books, plays, and magazines</h2>
+<ul>
+<li>
+Jules Verne, <em>Around the World in Eighty Days</em>
+(<em>Le tour du monde en quatre-vingts jours</em>).
+Wall-clock time plays a central role in the plot.
+European readers of the 1870s clearly held the U.S. press in
+deep contempt; the protagonists cross the U.S. without once
+reading a paper.
+Available versions include
+<a href="http://www.literature.org/Works/Jules-Verne/eighty">an English
+translation</a>, and
+<a href="http://fourmilab.ch/etexts/www/tdm80j">the original French</a>
+"with illustrations from the original 1873 French-language edition".
+</li>
+<li>
+Nick Enright, <em>Daylight Saving</em>, 1989.
+A fast-paced comedy about love and loneliness as the clocks turn back.
+</li>
+<li>
+Umberto Eco, <em>The Island of the Day Before</em>
+(<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
+part in the novel." (Paul Eggert, 2006-04-22)
+</li>
+<li>
+John Dunning, <a
+href="http://books.simonandschuster.com/Two-OClock-Eastern-Wartime/John-Dunning/9781439171530"><em>Two
+O'Clock, Eastern Wartime</em></a>, 2001.
+Mystery, history, daylight saving time, and old-time radio.
+</li>
+<li>
+Surrealist artist Guy Billout's work "Date Line" appeared on page 103
+of the 1999-11 <em>Atlantic Monthly</em>.
+</li>
+<li>
+"Gloom, Gloom, Go Away" by Walter Kirn appeared on page 106 of <em>Time</em>
+magazine's 2002-11-11 issue; among other things, it proposed
+year-round DST as a way of lessening wintertime despair.
+</li>
+</ul>
<h2>Music</h2>
<p>
Data on recordings of "Save That Time," Russ Long, Serrob Publishing, BMI:</p>
@@ -254,216 +432,6 @@ Supernaw.</td></tr>
<tr><td>Notes</td><td>Includes the piece "What Time Is It"
("He knew what time it was everywhere...that counted").</td></tr>
</table>
-
-<h2>TV episodes</h2>
-
-<ul>
-<li>
-An episode of <em>The Adventures of Superman</em> entitled "The Mysterious
-Cube," first aired 1958-02-24, had Superman convincing the controllers
-of the Arlington Time Signal to broadcast ahead of actual time;
-doing so got a crook trying to be declared dead to
-emerge a bit too early from the titular enclosure.
-</li>
-<li>
-The 1960s ITC television series <em>The Prisoner</em> included an episode
-entitled "The Chimes of Big Ben" in which our protagonist tumbled to
-the fraudulent nature of a Poland-to-England escape upon hearing "Big
-Ben" chiming on Polish local time.
-</li>
-<li>
-The series <em>Seinfeld</em> included an episode entitled "The Susie," first
-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 "20 Hours in America" episode of <em>The West Wing</em>,
-first aired 2002-09-25, contained a <a
-href="https://www.youtube.com/watch?v=-J1NHzQ1sgc">scene</a> that
-saw White House staffers stranded in Indiana; they thought they had time to
-catch Air Force One but were done in by intra-Indiana local time changes.
-</li>
-<li>
-"In what time zone would you find New York City?" was a $200 question on
-the 1999-11-13 United States airing of <em>Who Wants to Be a Millionaire?</em>,
-and "In 1883, what industry led the movement to divide the U.S. into four time
-zones?" was a $32,000 question on the 2001-05-23 United States airing of
-the same show. At this rate, the million-dollar time-zone
-question should have been asked 2002-06-04.
-</li>
-<li>
-A private jet's mid-flight change of time zones distorts Alison Dubois'
-premonition in the "We Had a Dream" episode of <em>Medium</em>
-(originally aired 2007-02-28).
-</li>
-<li>
-In the <em>30 Rock</em> episode "Anna Howard Shaw Day"
-(first broadcast 2010-02-11),
-Jack Donaghy's date realizes that a Geneva-to-New-York business phone call
-received in the evening must be fake given the difference in local times.
-</li>
-<li>
-In the "Run by the Monkeys" episode of <em>Da Vinci's Inquest</em>
-(first broadcast 2002-11-17),
-a witness in a five-year-old fire case realizes they may not have set
-their clock back when daylight saving ended on the day of the fire,
-introducing the possibility of an hour when arson might have occurred.
-</li>
-<li>
-In "The Todd Couple" episode of <em>Outsourced</em> (first aired 2011-02-10),
-Manmeet sets up Valentine's Day teledates for 6:00 and 9:00pm;
-since one is with a New Yorker and the other with a San Franciscan,
-hilarity ensues.
-(Never mind that this should be 7:30am in Mumbai, yet for some reason the show
-proceeds as though it's also mid-evening there.)
-</li>
-<li>
-In the "14 Days to Go"/"T Minus..." episode of
-<em>You, Me and the Apocalypse</em>
-(first aired 2015-11-11 in the UK, 2016-03-10 in the US),
-the success of a mission to deal with a comet
-hinges on whether or not Russia observes daylight saving time.
-(In the US, the episode first aired in the week before the switch to DST.)
-</li>
-</ul>
-
-<table>
-<tr><td>TV episode title</td><td>The Lost Hour</td>
-<tr><td>TV series</td><td><em>Eerie, Indiana</em></td>
-<tr><td>TV episode number</td><td>10</td>
-<tr><td>Network</td><td>NBC</td>
-<tr><td>Air date</td><td>1991-12-01</td>
-<tr><td>Notes</td><td>Despite Indiana's then-lack of DST, Marshall changes his clock with unusual consequences.</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>TV episode title</td><td>Time Tunnel</td>
-<tr><td>TV series</td><td><em>The Adventures of Pete & Pete</em></td>
-<tr><td>TV episode number</td><td>5, season 2</td>
-<tr><td>Network</td><td>Nickelodeon</td>
-<tr><td>Air date</td><td>1994-10-23</td>
-<tr><td>Notes</td><td>The two Petes travel back in time an hour on the day that DST ends.</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>TV episode title</td><td>King-Size Homer</td>
-<tr><td>TV series</td><td><em>The Simpsons</em></td>
-<tr><td>TV episode number</td><td>135</td>
-<tr><td>Network</td><td>Fox</td>
-<tr><td>Air date</td><td>1995-11-05</td>
-<tr><td>Notes</td><td>Homer, working from home, remarks "8:58, first
-time I've ever been early for work. Except for all those daylight
-savings days. Lousy farmers."</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>TV episode title</td><td>Tracks</td></tr>
-<tr><td>TV series</td><td><em>The Good Wife</em></td></tr>
-<tr><td>TV episode number</td><td>12, season 7</td></tr>
-<tr><td>Network</td><td>CBS</td></tr>
-<tr><td>Air date</td><td>2016-01-17</td></tr>
-<tr><td>Notes</td><td>The applicability of a contract hinges on the
-time zone associated with a video time stamp.</td></tr>
-</table>
-
-<h2>Books, plays, and magazines</h2>
-
-<table>
-<tr><td>Artist</td><td>Jules Verne</td></tr>
-<tr><td>Book</td><td><em>Around the World in Eighty Days</em>
-(<em>Le tour du monde en quatre-vingts jours</em>)</td></tr>
-<tr><td>Notes</td><td>Wall-clock time plays a central role in the plot.
-European readers of the 1870s clearly held the U.S. press in
-deep contempt; the protagonists cross the U.S. without once
-reading a paper.
-An on-line French-language version of the book
-"with illustrations from the original 1873 French-language edition"
-is available at
-<a href="http://fourmilab.ch/etexts/www/tdm80j">http://fourmilab.ch/etexts/www/tdm80j</a>
-An on-line English-language translation of the book is available at
-<a href="http://www.literature.org/Works/Jules-Verne/eighty">http://www.literature.org/Works/Jules-Verne/eighty</a></td></tr>
-
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Nick Enright</td></tr>
-<tr><td>Play</td><td><em>Daylight Saving</em></td></tr>
-<tr><td>Copyright Date</td><td>1989</td></tr>
-<tr><td>Notes</td><td>
-A fast-paced comedy about love and loneliness as the clocks turn back.
-</td></tr>
-
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Umberto Eco</td></tr>
-<tr><td>Book</td><td><em>The Island of the Day Before</em>
-(<em>L'isola del giorno prima</em>)</td></tr>
-<tr><td>Copyright Date</td><td>1994</td></tr>
-<tr><td>Notes</td><td>
-"...the story of a 17th century Italian nobleman trapped near an island
-on the International Date Line. Time and time zones play an integral
-part in the novel." (Paul Eggert, 2006-04-22)
-</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>John Dunning</td></tr>
-<tr><td>Book</td><td><a
-href="http://books.simonandschuster.com/Two-OClock-Eastern-Wartime/John-Dunning/9781439171530"><em>Two
-O'Clock, Eastern Wartime</em></a></td></tr>
-<tr><td>Copyright Date</td><td>2001</td></tr>
-<tr><td>Notes</td><td>
-Mystery, history, daylight saving time, and old-time radio.
-</td></tr>
-</table>
-<hr>
-<ul>
-<li>
-Surrealist artist Guy Billout's work "Date Line" appeared on page 103
-of the 1999-11 <em>Atlantic Monthly</em>.
-</li>
-<li>
-"Gloom, Gloom, Go Away" by Walter Kirn appeared on page 106 of <em>Time</em>
-magazine's 2002-11-11 issue; among other things, it proposed
-year-round DST as a way of lessening wintertime despair.
-</li>
-</ul>
-<h2>Movies</h2>
-<ul>
-<li>
-In the 1946 movie <em>A Matter of Life and Death</em>
-(U.S. title <em>Stairway to Heaven</em>)
-there is a reference to British Double Summer Time.
-The time does not play a large part in the plot;
-it's just a passing reference to the time when one of the
-characters was supposed to have died (but didn't).
-The IMDb page is at
-<a href="http://us.imdb.com/title/tt0038733/">
-http://us.imdb.com/title/tt0038733/
-</a>. (Dave Cantor)
-<li>
-The 1953 railway comedy movie <em>The Titfield Thunderbolt</em> includes a
-play on words on British Double Summer Time. Valentine's wife wants
-him to leave the pub and asks him, "Do you know what time it is?"
-And he, happy where he is, replies: "Yes, my love. Summer double time."
-IMDb page:
-<a href="http://us.imdb.com/title/tt0046436/">
-http://us.imdb.com/title/tt0046436/
-</a>. (Mark Brader, 2009-10-02)
-</li>
-<li>
-The premise of the 1999 caper movie <em>Entrapment</em> involves computers
-in an international banking network being shut down briefly at
-midnight in each time zone to avoid any problems at the transition
-from the year 1999 to 2000 in that zone. (Hmmmm.) If this shutdown
-is extended by 10 seconds, it will create a one-time opportunity for
-a gigantic computerized theft. To achieve this, at one location the
-crooks interfere with the microwave system supplying time signals to
-the computer, advancing the time by 0.1 second each minute over the
-last hour of 1999. (So this movie teaches us that 0.1 × 60 = 10.)
-IMDb page:
-<a href="http://us.imdb.com/title/tt0137494/">
-http://us.imdb.com/title/tt0137494/
-</a>. (Mark Brader, 2009-10-02)
-</li>
-<li>
-One mustn't forget the
-<a href="https://www.youtube.com/watch?v=k4EUTMPuvHo">trailer</a>
-(2014; 2:23) for the movie <em>Daylight Saving</em>.
-</li>
-</ul>
<h2>Comics</h2>
<ul>
<li>
diff --git a/tz-link.htm b/tz-link.htm
index 52bb492..8964490 100644
--- a/tz-link.htm
+++ b/tz-link.htm
@@ -10,7 +10,7 @@
content="Sources for time zone and daylight saving time data">
<meta name="DC.Creator" content="Eggert, Paul">
<meta name="DC.Contributor" content="Olson, Arthur David">
-<meta name="DC.Date" content="2016-09-05">
+<meta name="DC.Date" content="2016-09-09">
<meta name="DC.Description"
content="Sources of information about time zones and daylight saving time">
<meta name="DC.Identifier"
@@ -65,13 +65,13 @@ title="Advanced Interactive eXecutive">AIX</abbr></a>,
<a href="https://en.wikipedia.org/wiki/BlackBerry_10">BlackBerry 10</a>,
<a href="http://www.apple.com/ios/"><abbr
title="iPhone OS">iOS</abbr></a>,
-<a href="http://windows.microsoft.com">Microsoft Windows</a>,
+<a href="http://www.apple.com/macos/"><abbr
+title="Mac Operating System">macOS</abbr></a>,
+<a href="https://www.microsoft.com/en-us/windows">Microsoft Windows</a>,
<a href="http://www.hp.com/go/openvms/">Open<abbr
title="Virtual Memory System">VMS</abbr></a>,
-<a href="https://www.oracle.com/database/index.html">Oracle Database</a>,
-<a href="http://oracle.com/solaris">Oracle Solaris</a>, and
-<a href="http://www.apple.com/osx/"><abbr title="Operating System Ten">OS
-X</abbr></a>.</p>
+<a href="https://www.oracle.com/database/index.html">Oracle Database</a>, and
+<a href="https://www.oracle.com/solaris">Oracle Solaris</a>.</p>
<p>
Each location in the database represents a region where all
clocks keeping local time have agreed since 1970.
@@ -103,7 +103,7 @@ for time stamps after 1960 this is more precisely <a
href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time">Coordinated
Universal Time</a> (<abbr>UTC</abbr>).
The database also records when daylight saving time was in use,
-along with alphabetic time zone abbreviations such as <abbr>EST</abbr>
+along with some time zone abbreviations such as <abbr>EST</abbr>
for Eastern Standard Time in the <abbr>US</abbr>.</p>
<p>
The following <a
@@ -142,7 +142,7 @@ of the <a href="http://www.iana.org">Internet Assigned Numbers
Authority (IANA)</a>.
An <a href="https://github.com/eggert/tz">unofficial development
repository</a> of the code and data is available
-in <a href="http://git-scm.com">Git</a> form
+in <a href="https://git-scm.com">Git</a> form
from <a href="https://github.com">GitHub</a>; be careful, as this
repository is less well tested and probably contains more errors.
<p>
@@ -208,7 +208,7 @@ the Timing of Time Zone Changes</a> gives examples of problems caused
by inadequate notice by governments of time zone and daylight saving
rule changes.</li>
<li><a
-href="http://blog.jonudell.net/2009/10/23/a-literary-appreciation-of-the-olsonzoneinfotz-database/">A
+href="https://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>
@@ -244,15 +244,14 @@ names and shows location maps.</li>
</ul>
<h2>Network protocols for <code><abbr>tz</abbr></code> data</h2>
<ul>
-<li>The <a href="http://www.ietf.org">Internet Engineering Task Force</a>'s
+<li>The <a href="https://www.ietf.org">Internet Engineering Task Force</a>'s
<a href="https://datatracker.ietf.org/wg/tzdist/charter/">Time Zone Data
Distribution Service (tzdist) working group</a> defined <a
href="https://tools.ietf.org/html/rfc7808">TZDIST</a>
(Internet <abbr>RFC</abbr> 7808), a time zone data distribution service,
along with a <a href="https://tools.ietf.org/html/rfc7809">calendar access
protocol for transferring time zone data by reference</a>
-(Internet <abbr>RFC</abbr> 7809). This work was based
-on the iCalendar and CalConnect efforts described below.</li>
+(Internet <abbr>RFC</abbr> 7809).</li>
<li>The <a href="https://tools.ietf.org/html/rfc5545">
Internet Calendaring and Scheduling Core Object Specification
(iCalendar)</a> (Internet <abbr>RFC</abbr> 5445)
@@ -261,35 +260,12 @@ data; see its VTIMEZONE calendar component.
The iCalendar format requires specialized parsers and generators; a
variant <a href="https://tools.ietf.org/html/rfc6321">xCal</a>
(Internet <abbr>RFC</abbr> 6321) uses
-<a href="http://www.w3.org/XML/"><abbr
+<a href="https://www.w3.org/XML/"><abbr
title="Extensible Markup Language">XML</abbr></a> format, and a variant
<a href="https://tools.ietf.org/html/rfc7265">jCal</a>
(Internet <abbr>RFC</abbr> 7265)
uses <a href="http://www.json.org"><abbr
-title="JavaScript Object Notation">JSON</abbr></a> format.
-<a href="https://www.calconnect.org">CalConnect, The Calendaring and Scheduling
-Consortium</a> is promoting further work in this area. <a
-href="http://calconnect.org/publications/icalendartimezoneproblemsandrecommendationsv1.0.pdf">iCalendar
-TIMEZONE Problems and Recommendations</a> offers guidelines and
-recommendations for the use of VTIMEZONE and <code><abbr>tz</abbr></code>.</li>
-<li>The <a
-href="http://calconnect.org/publications/timezoneregistryandservicerecommendationsv1.0.pdf">Timezone
-Registry and Service Recommendations</a> of CalConnect's
-<a href="https://www.calconnect.org/about/technical-committees/tc-timezone">TIMEZONE
-Technical Committee</a> discusses a
-strategy for defining and deploying a time zone
-registration process that would establish unique names for each
-version of each <code><abbr>tz</abbr></code> zone, along with a polygonal
-representation of the geographical area corresponding to the
-zone.</li>
-<li>The <a
-href="http://lists.w3.org/Archives/Public/www-rdf-calendar/">www-rdf-calendar</a>
-list discusses <a
-href="http://www.w3.org/RDF/"><abbr
-title="Resource Description Framework">RDF</abbr></a>-based calendar
-and group scheduling systems, and has a <a
-href="http://www.w3.org/2002/12/cal/#tzd">workspace on time zone
-data</a> converted from <code><abbr>tz</abbr></code>.</li>
+title="JavaScript Object Notation">JSON</abbr></a> format.</li>
</ul>
<h2>Other <code><abbr>tz</abbr></code> compilers</h2>
<ul>
@@ -423,7 +399,8 @@ has an independent, thread-safe implementation of
a <code><abbr>tz</abbr></code> binary file reader.
This library is freely available under the LGPL
and is widely used in <abbr>GNU</abbr>/Linux systems.</li>
-<li><a href="https://www.gnome.org">GNOME</a>'s Glib has
+<li><a href="https://www.gnome.org">GNOME</a>'s
+<a href="https://developer.gnome.org/glib/">GLib</a> has
a <code><abbr>tz</abbr></code> binary file reader written in C that
creates a <code>GTimeZone</code> object representing sets
of <abbr>UT</abbr> offsets.
@@ -542,7 +519,8 @@ is another time zone database.</li>
<li><a href="http://tycho.usno.navy.mil/tzones.html">World Time Zones</a>
contains data from the Time Service Department of the
<abbr>US</abbr> Naval Observatory.</li>
-<li>The <a href="http://www.iata.org/publications/Pages/ssim.aspx">Standard
+<li>The <a
+href="http://www.iata.org/publications/store/Pages/standard-schedules-information.aspx">Standard
Schedules Information Manual</a> of the
International Air Transport Association
gives current time zone rules for airports served by commercial aviation.</li>
@@ -613,7 +591,7 @@ common.</li>
</ul>
<h2>Civil time concepts and history</h2>
<ul>
-<li><a href="http://www.nist.gov/pml/general/time/index.cfm">A
+<li><a href="http://physics.nist.gov/time">A
Walk through Time</a>
surveys the evolution of timekeeping.</li>
<li><a href="http://www.webexhibits.org/daylightsaving/">About Daylight
@@ -622,8 +600,6 @@ is an overall history of <abbr>DST</abbr>.</li>
<li><a href="https://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
History of Daylight Saving Time</a> summarizes some of the contentious
history of <abbr>DST</abbr>.</li>
@@ -681,7 +657,7 @@ hreflang="nl">Legal time in the Netherlands (in Dutch)</a>
covers the history of local time in the Netherlands from ancient times.</dd>
<dt>New Zealand</dt>
<dd>The Department of Internal Affairs maintains a brief <a
-href="http://www.dia.govt.nz/Daylight-Saving-History">History of
+href="https://www.dia.govt.nz/Daylight-Saving-History">History of
Daylight Saving</a>. The privately-maintained <a
href="http://astrologyschool.com/nztime.html">History of New Zealand
time</a> has more details.</dd>
@@ -714,7 +690,8 @@ title="Network Time Protocol">NTP</abbr>: The Network
Time Protocol</a>
discusses how to synchronize clocks of
Internet hosts.</li>
-<li>The <a href="http://www.nist.gov/el/isd/ieee/ieee1588.cfm">Precision
+<li>The <a
+href="https://www.nist.gov/intelligent-systems-division/ieee-1588">Precision
Time Protocol</a> (<abbr
title="Institute of Electrical and Electronics Engineers">IEEE</abbr> 1588)
can achieve submicrosecond clock accuracy on a local area network.</li>
@@ -726,11 +703,6 @@ specifies a <a
href="https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol"><abbr>DHCP</abbr></a>
option for a server to configure
a client's time zone and daylight saving settings automatically.</li>
-<li><a href="http://gauss.gge.unb.ca/GMT.UT.and.the.RGO.html">A Few Facts
-Concerning <abbr>GMT</abbr>, <abbr>UT</abbr>, and
-the <abbr title="Royal Greenwich Observatory">RGO</abbr></a>
-answers questions like "What is the
-difference between <abbr>GMT</abbr> and <abbr>UTC</abbr>?"</li>
<li><a
href="http://www.cv.nrao.edu/~rfisher/Ephemerides/times.html">Astronomical
Times</a> explains more abstruse astronomical time scales like
@@ -739,7 +711,7 @@ Times</a> explains more abstruse astronomical time scales like
<abbr title="Barycentric Dynamic Time">TDB</abbr>.
<a href="http://www.ucolick.org/~sla/leapsecs/timescales.html">Time
Scales</a> goes into more detail, particularly for historical variants.</li>
-<li>The <a href="http://iau.org"><abbr
+<li>The <a href="http://www.iau.org"><abbr
title="International Astronomical Union">IAU</abbr></a>'s <a
href="http://www.iausofa.org"><abbr
title="Standards Of Fundamental Astronomy">SOFA</abbr></a>
@@ -753,10 +725,8 @@ code for converting among time scales like
Space Flight – Reference Systems – Time Conventions</a>
briefly explains interplanetary space flight timekeeping.</li>
<li><a
-href="http://www.giss.nasa.gov/tools/mars24/help/notes.html">Technical
-Notes on Mars Solar Time as Adopted by the Mars24 Sunclock</a> briefly
-describes Mars Coordinated Time (<abbr
-title="Mars Coordinated Time">MTC</abbr>) and the
+href="http://www.giss.nasa.gov/tools/mars24/help/notes.html">Mars24 Sunclock
+– Time on Mars</a> describes Airy Mean Time (<abbr>AMT</abbr>) and the
diverse local time
scales used by each landed mission on Mars.</li>
<li><a href="http://leapsecond.com">LeapSecond.com</a> is
@@ -772,7 +742,7 @@ when leap seconds occur.</li>
<li>The <a
href="https://pairlist6.pair.net/mailman/listinfo/leapsecs">Leap
Second Discussion List</a> covers <a
-href="http://gauss.gge.unb.ca/papers.pdf/gpsworld.november99.pdf">McCarthy
+href="http://www2.unb.ca/gge/Resources/gpsworld.november99.pdf">McCarthy
and Klepczynski's proposal to discontinue leap seconds</a>,
discussed further in
<a href="http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The
@@ -790,7 +760,7 @@ zone names, abbreviations, identifiers, and formats. For example, it
contains French translations for "Eastern European Summer Time",
"<abbr title="Eastern European Summer Time">EEST</abbr>", and
"Bucharest". Its
-<a href="http://unicode.org/cldr/charts/by_type/index.html">by-type
+<a href="http://www.unicode.org/cldr/charts/latest/by_type/">by-type
charts</a> show these values for many locales. Data values are available in
both <abbr title="Locale Data Markup Language">LDML</abbr>
(an <abbr>XML</abbr> format) and <abbr>JSON</abbr>.
@@ -834,10 +804,10 @@ practice. For example, in English-speaking North America
but in China it denotes 8 hours ahead of <abbr>UTC</abbr>,
and French-speaking North Americans prefer
"<abbr title="Heure Normale du Centre">HNC</abbr>" to
-"<abbr>CST</abbr>". For <abbr>POSIX</abbr> the <code><abbr>tz</abbr></code>
-database contains English abbreviations for all time stamps but in
-many cases these are merely inventions of the database
-maintainers.</li>
+"<abbr>CST</abbr>". The <code><abbr>tz</abbr></code>
+database contains English abbreviations for many time stamps;
+unfortunately some of these abbreviations were merely the database maintainers'
+inventions, and are gradually being removed.</li>
<li>Numeric time zone abbreviations typically count hours east of
<abbr>UTC</abbr>, e.g., +09 for Japan and
−10 for Hawaii. However, the <abbr>POSIX</abbr>
@@ -852,7 +822,7 @@ settings like <code><abbr>TZ</abbr>="Asia/Tokyo"</code> and
confusion, handle old time stamps better, and insulate you better from
any future changes to the rules. One should never set
<abbr>POSIX</abbr> <code><abbr>TZ</abbr></code> to a value like
-<code>"GMT-9"</code>, though, since this would falsely claim that
+<code>"GMT-9"</code>, though, since this would incorrectly imply that
local time is nine hours ahead of <abbr>UTC</abbr> and the time zone
is called "<abbr>GMT</abbr>".</li>
</ul>
--
2.7.4
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