Author: edwin
Date: Sun Nov 16 04:12:25 2014
New Revision: 274567
URL: https://svnweb.freebsd.org/changeset/base/274567

Log:
  MFC of 274559,tzdata8:
  
  Release 2014j - 2014-11-10 17:37:11 -0800
  
    Changes affecting current and future time stamps
  
      Turks & Caicos' switch from US eastern time to UTC-4 year-round
      did not occur on 2014-11-02 at 02:00.  It's currently scheduled
      for 2015-11-01 at 02:00.  (Thanks to Chris Walton.)
  
    Changes affecting past time stamps
  
      Many pre-1989 time stamps have been corrected for Asia/Seoul and
      Asia/Pyongyang, based on sources for the Korean-language Wikipedia
      entry for time in Korea.  (Thanks to Sanghyuk Jung.)  Also, no
      longer guess that Pyongyang mimicked Seoul time after World War II,
      as this is politically implausible.
  
      Some more zones have been turned into links, when they differed
      from existing zones only for older time stamps.  As usual,
      these changes affect UTC offsets in pre-1970 time stamps only.
      Their old contents have been moved to the 'backzone' file.
      The affected zones are: Africa/Addis_Ababa, Africa/Asmara,
      Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala,
      Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and
      Indian/Mayotte.
  
    Changes affecting commentary
  
      The commentary is less enthusiastic about Shanks as a source,
      and is more careful to distinguish UT from UTC.

Modified:
  stable/8/share/zoneinfo/africa
  stable/8/share/zoneinfo/asia
  stable/8/share/zoneinfo/australasia
  stable/8/share/zoneinfo/europe
  stable/8/share/zoneinfo/northamerica
  stable/8/share/zoneinfo/southamerica
Directory Properties:
  stable/8/share/zoneinfo/   (props changed)

Modified: stable/8/share/zoneinfo/africa
==============================================================================
--- stable/8/share/zoneinfo/africa      Sun Nov 16 04:11:37 2014        
(r274566)
+++ stable/8/share/zoneinfo/africa      Sun Nov 16 04:12:25 2014        
(r274567)
@@ -6,20 +6,19 @@
 # t...@iana.org for general use in the future).  For more, please see
 # the file CONTRIBUTING in the tz distribution.
 
-# From Paul Eggert (2013-02-21):
+# From Paul Eggert (2014-10-31):
 #
-# A good source for time zone historical data outside the U.S. is
+# Unless otherwise specified, the source for data through 1990 is:
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
+# Unfortunately this book contains many errors and cites no sources.
 #
 # Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
-# of the IATA's data after 1990.
-#
-# Except where otherwise noted, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
+# of the IATA's data after 1990.  Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
 #
 # Another source occasionally used is Edward W. Whitman, World Time 
Differences,
 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
@@ -65,7 +64,6 @@
 #       3:00   CAST    Central Africa Summer Time (no longer used)
 #       3:00   SAST    South Africa Summer Time (no longer used)
 #       3:00   EAT     East Africa Time
-#       4:00   EAST    East Africa Summer Time (no longer used)
 
 # Algeria
 # Rule NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
@@ -146,9 +144,7 @@ Zone        Africa/Ndjamena 1:00:12 -       LMT     1912 
                        1:00    -       WAT
 
 # Comoros
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone   Indian/Comoro   2:53:04 -       LMT     1911 Jul # Moroni, Gran Comoro
-                       3:00    -       EAT
+# See Africa/Nairobi.
 
 # Democratic Republic of the Congo
 # See Africa/Lagos for the western part and Africa/Maputo for the eastern.
@@ -172,9 +168,7 @@ Link Africa/Abidjan Africa/Sao_Tome # S�
 Link Africa/Abidjan Atlantic/St_Helena # St Helena
 
 # Djibouti
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone   Africa/Djibouti 2:52:36 -       LMT     1911 Jul
-                       3:00    -       EAT
+# See Africa/Nairobi.
 
 ###############################################################################
 
@@ -387,27 +381,8 @@ Zone       Africa/Cairo    2:05:09 -       LMT     1900 Oct
 # See Africa/Lagos.
 
 # Eritrea
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone   Africa/Asmara   2:35:32 -       LMT     1870
-                       2:35:32 -       AMT     1890        # Asmara Mean Time
-                       2:35:20 -       ADMT    1936 May  5 # Adis Dera MT
-                       3:00    -       EAT
-
 # Ethiopia
-# From Paul Eggert (2014-07-31):
-# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a
-# 12-hour clock starting at our 06:00, so their "8 o'clock" is our
-# 02:00 or 14:00.  Keep this in mind when you ask the time in Amharic.
-#
-# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time
-# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in
-# 1890, and that they switched to 3:00 on 1936-05-05.  Perhaps 38E50
-# was for Adis Dera.  Quite likely the Shanks data entries are wrong
-# anyway.
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone Africa/Addis_Ababa        2:34:48 -       LMT     1870
-                       2:35:20 -       ADMT    1936 May  5 # Adis Dera MT
-                       3:00    -       EAT
+# See Africa/Nairobi.
 
 # Gabon
 # See Africa/Lagos.
@@ -451,6 +426,15 @@ Zone       Africa/Nairobi  2:27:16 -       LMT     1928 J
                        2:30    -       BEAT    1940
                        2:45    -       BEAUT   1960
                        3:00    -       EAT
+Link Africa/Nairobi Africa/Addis_Ababa  # Ethiopia
+Link Africa/Nairobi Africa/Asmara       # Eritrea
+Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania
+Link Africa/Nairobi Africa/Djibouti
+Link Africa/Nairobi Africa/Kampala      # Uganda
+Link Africa/Nairobi Africa/Mogadishu    # Somalia
+Link Africa/Nairobi Indian/Antananarivo         # Madagascar
+Link Africa/Nairobi Indian/Comoro
+Link Africa/Nairobi Indian/Mayotte
 
 # Lesotho
 # See Africa/Johannesburg.
@@ -528,11 +512,7 @@ Zone       Africa/Tripoli  0:52:44 -       LMT     1920
                        2:00    -       EET
 
 # Madagascar
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone Indian/Antananarivo 3:10:04 -     LMT     1911 Jul
-                       3:00    -       EAT     1954 Feb 27 23:00s
-                       3:00    1:00    EAST    1954 May 29 23:00s
-                       3:00    -       EAT
+# See Africa/Nairobi.
 
 # Malawi
 # See Africa/Maputo.
@@ -635,9 +615,7 @@ Zone Indian/Mauritius       3:50:00 -       LMT     1907
 # no information; probably like Indian/Mauritius
 
 # Mayotte
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone   Indian/Mayotte  3:00:56 -       LMT     1911 Jul # Mamoutzou
-                       3:00    -       EAT
+# See Africa/Nairobi.
 
 # Morocco
 # See the 'europe' file for Spanish Morocco (Africa/Ceuta).
@@ -1049,11 +1027,7 @@ Zone     Indian/Mahe     3:41:48 -       LMT     1906 
Jun 
 # See Africa/Abidjan.
 
 # Somalia
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone Africa/Mogadishu  3:01:28 -       LMT     1893 Nov
-                       3:00    -       EAT     1931
-                       2:30    -       BEAT    1957
-                       3:00    -       EAT
+# See Africa/Nairobi.
 
 # South Africa
 # Rule NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
@@ -1096,11 +1070,7 @@ Link Africa/Khartoum Africa/Juba
 # See Africa/Johannesburg.
 
 # Tanzania
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone Africa/Dar_es_Salaam 2:37:08 -    LMT     1931
-                       3:00    -       EAT     1948
-                       2:45    -       BEAUT   1961
-                       3:00    -       EAT
+# See Africa/Nairobi.
 
 # Togo
 # See Africa/Abidjan.
@@ -1206,12 +1176,7 @@ Zone     Africa/Tunis    0:40:44 -       LMT     1881 May
                        1:00    Tunisia CE%sT
 
 # Uganda
-# Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone   Africa/Kampala  2:09:40 -       LMT     1928 Jul
-                       3:00    -       EAT     1930
-                       2:30    -       BEAT    1948
-                       2:45    -       BEAUT   1957
-                       3:00    -       EAT
+# See Africa/Nairobi.
 
 # Zambia
 # Zimbabwe

Modified: stable/8/share/zoneinfo/asia
==============================================================================
--- stable/8/share/zoneinfo/asia        Sun Nov 16 04:11:37 2014        
(r274566)
+++ stable/8/share/zoneinfo/asia        Sun Nov 16 04:12:25 2014        
(r274567)
@@ -6,20 +6,19 @@
 # t...@iana.org for general use in the future).  For more, please see
 # the file CONTRIBUTING in the tz distribution.
 
-# From Paul Eggert (2013-08-11):
+# From Paul Eggert (2014-10-31):
 #
-# A good source for time zone historical data outside the U.S. is
+# Unless otherwise specified, the source for data through 1990 is:
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
+# Unfortunately this book contains many errors and cites no sources.
 #
 # Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
-# of the IATA's data after 1990.
-#
-# Except where otherwise noted, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
+# of the IATA's data after 1990.  Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
 #
 # Another source occasionally used is Edward W. Whitman, World Time 
Differences,
 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
@@ -1663,44 +1662,70 @@ Zone    Asia/Bishkek    4:58:24 -       LMT     1924 May
 # Korea (North and South)
 
 # From Annie I. Bang (2006-07-10):
-# http://www.koreaherald.co.kr/SITE/data/html_dir/2006/07/10/200607100012.asp
-# The Ministry of Commerce, Industry and Energy has already
-# commissioned a research project [to reintroduce DST] and has said
-# the system may begin as early as 2008....  Korea ran a daylight
-# saving program from 1949-61 but stopped it during the 1950-53 Korean War.
-
-# From Shanks & Pottenger:
-# Rule NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
-Rule   ROK     1960    only    -       May     15      0:00    1:00    D
-Rule   ROK     1960    only    -       Sep     13      0:00    0       S
-Rule   ROK     1987    1988    -       May     Sun>=8  0:00    1:00    D
-Rule   ROK     1987    1988    -       Oct     Sun>=8  0:00    0       S
-
-# From Paul Eggert (2014-07-01):
-# The following entries are from Shanks & Pottenger, except that I
-# guessed that time zone abbreviations through 1945 followed the same
+# http://www.koreaherald.com/view.php?ud=200607100012
+# Korea ran a daylight saving program from 1949-61 but stopped it
+# during the 1950-53 Korean War.  The system was temporarily enforced
+# between 1987 and 1988 ...
+
+# From Sanghyuk Jung (2014-10-29):
+# http://mm.icann.org/pipermail/tz/2014-October/021830.html
+# According to the Korean Wikipedia
+# http://ko.wikipedia.org/wiki/한국_표준시
+# [oldid=12896437 2014-09-04 08:03 UTC]
+# DST in Republic of Korea was as follows....  And I checked old
+# newspapers in Korean, all articles correspond with data in Wikipedia.
+# For example, the article in 1948 (Korean Language) proved that DST
+# started at June 1 in that year.  For another example, the article in
+# 1988 said that DST started at 2:00 AM in that year.
+
+# Rule NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
+Rule   ROK     1948    only    -       Jun      1      0:00    1:00    D
+Rule   ROK     1948    only    -       Sep     13      0:00    0       S
+Rule   ROK     1949    only    -       Apr      3      0:00    1:00    D
+Rule   ROK     1949    1951    -       Sep     Sun>=8  0:00    0       S
+Rule   ROK     1950    only    -       Apr      1      0:00    1:00    D
+Rule   ROK     1951    only    -       May      6      0:00    1:00    D
+Rule   ROK     1955    only    -       May      5      0:00    1:00    D
+Rule   ROK     1955    only    -       Sep      9      0:00    0       S
+Rule   ROK     1956    only    -       May     20      0:00    1:00    D
+Rule   ROK     1956    only    -       Sep     30      0:00    0       S
+Rule   ROK     1957    1960    -       May     Sun>=1  0:00    1:00    D
+Rule   ROK     1957    1960    -       Sep     Sun>=18 0:00    0       S
+Rule   ROK     1987    1988    -       May     Sun>=8  2:00    1:00    D
+Rule   ROK     1987    1988    -       Oct     Sun>=8  3:00    0       S
+
+# From Paul Eggert (2014-10-30):
+# The Korean Wikipedia entry gives the following sources for UT offsets:
+#
+# 1908: Official Journal Article No. 3994 (Edict No. 5)
+# 1912: Governor-General of Korea Official Gazette Issue No. 367
+#       (Announcement No. 338)
+# 1954: Presidential Decree No. 876 (1954-03-17)
+# 1961: Law No. 676 (1961-08-07)
+# 1987: Law No. 3919 (1986-12-31)
+#
+# The Wikipedia entry also has confusing information about a change
+# to UT+9 in April 1910, but then what would be the point of the later change
+# to UT+9 on 1912-01-01?  Omit the 1910 change for now.
+#
+# I guessed that time zone abbreviations through 1945 followed the same
 # rules as discussed under Taiwan, with nominal switches from JST to KST
 # when the respective cities were taken over by the Allies after WWII.
+#
+# For Pyongyang we have no information; guess no changes since World War II.
 
 # Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone   Asia/Seoul      8:27:52 -       LMT     1890
-                       8:30    -       KST     1904 Dec
-                       9:00    -       JCST    1928
-                       8:30    -       KST     1932
+Zone   Asia/Seoul      8:27:52 -       LMT     1908 Apr  1
+                       8:30    -       KST     1912 Jan  1
                        9:00    -       JCST    1937 Oct  1
                        9:00    -       JST     1945 Sep  8
                        9:00    -       KST     1954 Mar 21
-                       8:00    ROK     K%sT    1961 Aug 10
-                       8:30    -       KST     1968 Oct
+                       8:30    ROK     K%sT    1961 Aug 10
                        9:00    ROK     K%sT
-Zone   Asia/Pyongyang  8:23:00 -       LMT     1890
-                       8:30    -       KST     1904 Dec
-                       9:00    -       JCST    1928
-                       8:30    -       KST     1932
+Zone   Asia/Pyongyang  8:23:00 -       LMT     1908 Apr  1
+                       8:30    -       KST     1912 Jan  1
                        9:00    -       JCST    1937 Oct  1
                        9:00    -       JST     1945 Aug 24
-                       9:00    -       KST     1954 Mar 21
-                       8:00    -       KST     1961 Aug 10
                        9:00    -       KST
 
 ###############################################################################

Modified: stable/8/share/zoneinfo/australasia
==============================================================================
--- stable/8/share/zoneinfo/australasia Sun Nov 16 04:11:37 2014        
(r274566)
+++ stable/8/share/zoneinfo/australasia Sun Nov 16 04:12:25 2014        
(r274567)
@@ -797,19 +797,19 @@ Zone      Pacific/Wallis  12:15:20 -      LMT     1901
 # t...@iana.org for general use in the future).  For more, please see
 # the file CONTRIBUTING in the tz distribution.
 
-# From Paul Eggert (2013-02-21):
-# A good source for time zone historical data outside the U.S. is
+# From Paul Eggert (2014-10-31):
+#
+# Unless otherwise specified, the source for data through 1990 is:
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
+# Unfortunately this book contains many errors and cites no sources.
 #
 # Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
-# of the IATA's data after 1990.
-#
-# Except where otherwise noted, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
+# of the IATA's data after 1990.  Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
 #
 # Another source occasionally used is Edward W. Whitman, World Time 
Differences,
 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which

Modified: stable/8/share/zoneinfo/europe
==============================================================================
--- stable/8/share/zoneinfo/europe      Sun Nov 16 04:11:37 2014        
(r274566)
+++ stable/8/share/zoneinfo/europe      Sun Nov 16 04:12:25 2014        
(r274567)
@@ -6,16 +6,19 @@
 # t...@iana.org for general use in the future).  For more, please see
 # the file CONTRIBUTING in the tz distribution.
 
-# From Paul Eggert (2014-05-31):
-# A good source for time zone historical data outside the U.S. is
+# From Paul Eggert (2014-10-31):
+#
+# Unless otherwise specified, the source for data through 1990 is:
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
+# Unfortunately this book contains many errors and cites no sources.
 #
 # Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
-# of the IATA's data after 1990.
+# of the IATA's data after 1990.  Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
 #
 # A reliable and entertaining source about time zones is
 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
@@ -287,6 +290,14 @@
 #   "Timeball on the ballast office is down.  Dunsink time."
 #   -- James Joyce, Ulysses
 
+# "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean 
Time
+# was among various actions undertaken by the 'English' government that
+# would 'put the whole country into the SF (Sinn Féin) camp'.  She claimed
+# Irish 'public feeling (was) outraged by forcing of English time on us'."
+# -- Parsons M. Dublin lost its time zone - and 25 minutes - after 1916 Rising.
+# Irish Times 2014-10-27.
+# 
http://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411
+
 # From Joseph S. Myers (2005-01-26):
 # Irish laws are available online at <http://www.irishstatutebook.ie>.
 # These include various relating to legal time, for example:
@@ -594,6 +605,7 @@ Rule        Russia  1992    only    -       Sep     lastSat 
 23:
 Rule   Russia  1993    2010    -       Mar     lastSun  2:00s  1:00    S
 Rule   Russia  1993    1995    -       Sep     lastSun  2:00s  0       -
 Rule   Russia  1996    2010    -       Oct     lastSun  2:00s  0       -
+# As described below, Russia's 2014 change affects Zone data, not Rule data.
 
 # From Alexander Krivenyshev (2011-06-14):
 # According to Kremlin press service, Russian President Dmitry Medvedev

Modified: stable/8/share/zoneinfo/northamerica
==============================================================================
--- stable/8/share/zoneinfo/northamerica        Sun Nov 16 04:11:37 2014        
(r274566)
+++ stable/8/share/zoneinfo/northamerica        Sun Nov 16 04:12:25 2014        
(r274567)
@@ -991,19 +991,19 @@ Zone America/Menominee    -5:50:27 -      LMT     18
 
################################################################################
 
 
-# From Paul Eggert (2006-03-22):
-# A good source for time zone historical data outside the U.S. is
+# From Paul Eggert (2014-10-31):
+#
+# Unless otherwise specified, the source for data through 1990 is:
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
+# Unfortunately this book contains many errors and cites no sources.
 #
 # Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
-# of the IATA's data after 1990.
-#
-# Except where otherwise noted, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
+# of the IATA's data after 1990.  Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
 #
 # Other sources occasionally used include:
 #
@@ -3131,13 +3131,17 @@ Zone America/Miquelon   -3:44:40 -      LMT     191
 # From Paul Eggert (2014-08-19):
 # The 2014-08-13 Cabinet meeting decided to stay on UTC-4 year-round.  See:
 # http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm
-# Model this as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
+# Model this as a switch from EST/EDT to AST ...
+# From Chris Walton (2014-11-04):
+# ... the TCI government appears to have delayed the switch to
+# "permanent daylight saving time" by one year....
+# http://tcweeklynews.com/time-change-to-go-ahead-this-november-p5437-127.htm
 #
 # Zone NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 Zone America/Grand_Turk        -4:44:32 -      LMT     1890
                        -5:07:11 -      KMT     1912 Feb # Kingston Mean Time
                        -5:00   -       EST     1979
-                       -5:00   US      E%sT    2014 Nov  2  2:00
+                       -5:00   US      E%sT    2015 Nov Sun>=1 2:00
                        -4:00   -       AST
 
 # British Virgin Is

Modified: stable/8/share/zoneinfo/southamerica
==============================================================================
--- stable/8/share/zoneinfo/southamerica        Sun Nov 16 04:11:37 2014        
(r274566)
+++ stable/8/share/zoneinfo/southamerica        Sun Nov 16 04:12:25 2014        
(r274567)
@@ -6,23 +6,23 @@
 # t...@iana.org for general use in the future).  For more, please see
 # the file CONTRIBUTING in the tz distribution.
 
-# From Paul Eggert (2006-03-22):
-# A good source for time zone historical data outside the U.S. is
+# From Paul Eggert (2014-10-31):
+#
+# Unless otherwise specified, the source for data through 1990 is:
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
-#
-# For data circa 1899, a common source is:
-# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
-# http://www.jstor.org/stable/1774359
+# Unfortunately this book contains many errors and cites no sources.
 #
 # Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
-# of the IATA's data after 1990.
+# of the IATA's data after 1990.  Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
 #
-# Except where otherwise noted, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
+# For data circa 1899, a common source is:
+# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
+# http://www.jstor.org/stable/1774359
 #
 # Earlier editions of these tables used the North American style (e.g. ARST and
 # ARDT for Argentine Standard and Daylight Time), but the following quote
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