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-rw-r--r--contrib/tzdata/backzone48
1 files changed, 41 insertions, 7 deletions
diff --git a/contrib/tzdata/backzone b/contrib/tzdata/backzone
index 3006b27..d1fd83b 100644
--- a/contrib/tzdata/backzone
+++ b/contrib/tzdata/backzone
@@ -170,13 +170,13 @@ Zone Africa/Lome 0:04:52 - LMT 1893
# Angola
#
+# From Paul Eggert (2018-02-16):
# Shanks gives 1911-05-26 for the transition to WAT,
# evidently confusing the date of the Portuguese decree
-# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
-# with the date that it took effect, namely 1912-01-01.
+# (see Europe/Lisbon) with the date that it took effect.
#
Zone Africa/Luanda 0:52:56 - LMT 1892
- 0:52:04 - LMT 1912 Jan 1 # Luanda Mean Time?
+ 0:52:04 - LMT 1911 Dec 31 23:00u # Luanda MT?
1:00 - WAT
# Democratic Republic of the Congo (east)
@@ -271,9 +271,19 @@ Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
# Cayman Is
Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
- -5:07:11 - KMT 1912 Feb # Kingston Mean Time
+ -5:07:10 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST
+# United States
+#
+# From Paul Eggert (2018-03-18):
+# America/Chillicothe would be tricky, as it was a city of two-timers:
+# "To prevent a constant mixup at Chillicothe, caused by the courthouse
+# clock running on central time and the city running on 'daylight saving'
+# time, a third hand was added to the dial of the courthouse clock."
+# -- Ohio news in brief. The Cedarville Herald. 1920-05-21;43(21):1 (col. 5)
+# https://digitalcommons.cedarville.edu/cedarville_herald/794
+
# Canada
Zone America/Coral_Harbour -5:32:40 - LMT 1884
-5:00 NT_YK E%sT 1946
@@ -348,6 +358,30 @@ Zone America/Montreal -4:54:16 - LMT 1884
Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Cork Hill
-4:00 - AST
+# United States
+#
+# From Paul Eggert (2018-03-18):
+# America/Palm_Springs would be tricky, as it kept two sets of clocks
+# in 1946/7. See the following notes.
+#
+# From Steve Allen (2018-01-19):
+# The shadow of Mt. San Jacinto brings darkness very early in the winter
+# months. In 1946 the chamber of commerce decided to put the clocks of Palm
+# Springs forward by an hour in the winter.
+# https://www.desertsun.com/story/life/2017/12/27/palm-springs-struggle-daylight-savings-time-and-idea-sun-time/984416001/
+# Desert Sun, Number 18, 1 November 1946
+# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19461101
+# has proposal for meeting on front page and page 21.
+# Desert Sun, Number 19, 5 November 1946
+# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19461105
+# reports that Sun Time won at the meeting on front page and page 5.
+# Desert Sun, Number 37, 7 January 1947
+# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19470107.2.12
+# front page reports request to abandon Sun Time and page 7 notes a "class war".
+# Desert Sun, Number 38, 10 January 1947
+# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19470110
+# front page reports on end.
+
# Argentina
# This entry was intended for the following areas, but has been superseded by
# more detailed zones.
@@ -409,7 +443,7 @@ Zone Asia/Bahrain 3:22:20 - LMT 1920 # Manamah
# From Paul Eggert (2014-08-21):
# In tomorrow's The Hindu, Nitya Menon reports that India had two civil time
# zones starting in 1884, one in Bombay and one in Calcutta, and that railways
-# used a third time zone based on Madras time (80 deg. 18'30" E). Also,
+# used a third time zone based on Madras time (80° 18' 30" E). Also,
# in 1881 Bombay briefly switched to Madras time, but switched back. See:
# http://www.thehindu.com/news/cities/chennai/madras-375-when-madras-clocked-the-time/article6339393.ece
#Zone Asia/Chennai [not enough info to complete]
@@ -532,7 +566,7 @@ Zone Europe/Belfast -0:23:40 - LMT 1880 Aug 2
# Data from Joseph S. Myers
# https://mm.icann.org/pipermail/tz/2013-September/019883.html
# References to be added
-# LMT is for Town Church, St. Peter Port, 49 degrees 27'17"N 2 degrees 32'10"W
+# LMT is for Town Church, St. Peter Port, 49° 27' 17" N, 2° 32' 10" W.
Zone Europe/Guernsey -0:10:09 - LMT 1913 Jun 18
0:00 GB-Eire %s 1940 Jul 2
1:00 C-Eur CE%sT 1945 May 8
@@ -566,7 +600,7 @@ Zone Europe/Isle_of_Man -0:17:55 - LMT 1883 Mar 30 0:00s
# Data from Joseph S. Myers
# https://mm.icann.org/pipermail/tz/2013-September/019883.html
# References to be added
-# LMT is for Parish Church, St. Helier, 49 degrees 11'0.57"N 2 degrees 6'24.33"W
+# LMT is for Parish Church, St. Helier, 49° 11' 0.57" N, 2° 6' 24.33" W.
Zone Europe/Jersey -0:08:26 - LMT 1898 Jun 11 16:00u
0:00 GB-Eire %s 1940 Jul 2
1:00 C-Eur CE%sT 1945 May 8
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