[tz] TIme in Belize

[Paul Eggert]

Thanks again. I installed the attached patch to correct the older Belize data 
from Shanks.

I left the 1973/1974 and 1982/1983 transitions from Shanks as-is, as we don't 
have citations for that period. I just now checked, and Chris Pearce's book "The 
Great Daylight Saving Time Controversy" (2017) also says that there were 
transitions in Belize in 1973/1974 and 1982/1983, though he gives no details 
about dates and times. Pearce also mentions British Honduras newspaper reports 
from the 1950s that agree with the legal citations you gave, so that's a good sign.
-------------- next part --------------
From d7e93bdbaf71ed96bd77a907ceab9fb75c9e0d64 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert at cs.ucla.edu>
Date: Tue, 3 Nov 2020 11:46:47 -0800
Subject: [PATCH] Fix several Belize transitions 1942/1968

* NEWS: Mention this.
* northamerica (Belize): Correct several transitions for 1942
through 1968 (thanks to P Chan).
---
 NEWS         | 10 +++++-----
 northamerica | 48 ++++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 49 insertions(+), 9 deletions(-)

diff --git a/NEWS b/NEWS
index 4369cc9..756bbe0 100644
--- a/NEWS
+++ b/NEWS
@@ -4,13 +4,13 @@ Unreleased, experimental changes
 
   Changes to past timestamps
 
-    Correct several 1940 through 1985 transitions for Israel and Palestine,
-    fixing several entries originally derived from Shanks.
+    Correct several pre-1970 transitions, fixing entries originally
+    derived from Shanks.  The fixes include:
+      - Several 1942 through 1968 transitions for Belize.
+      - Several 1940 through 1985 transitions for Israel and Palestine.
+      - Several 1908 through 1960 transitions for Kenya and adjacent.
     (Thanks to P Chan.)
 
-    Correct several 1908 through 1960 transitions for Kenya and adjacent,
-    fixing several hazy entries originally derived from Shanks.
-    (Thanks to P Chan.)
 
 Release 2020d - 2020-10-21 11:24:13 -0700
 
diff --git a/northamerica b/northamerica
index 675c648..00b2e6d 100644
--- a/northamerica
+++ b/northamerica
@@ -2964,16 +2964,56 @@ Zone America/Barbados	-3:58:29 -	LMT	1924 # Bridgetown
 			-4:00	Barb	A%sT
 
 # Belize
-# Whitman entirely disagrees with Shanks; go with Shanks & Pottenger.
+
+# From P Chan (2020-11-03):
+# Below are some laws related to the time in British Honduras/Belize:
+#
+# Definition of Time Ordinance, 1927 (No.4 of 1927) [1927-04-01]
+# Ordinances of British Honduras Passed in the Year 1927, p 19-20
+# https://books.google.com/books?id=LqEpAQAAMAAJ&pg=RA3-PA19
+#
+# Definition of Time (Amendment) Ordinance, 1942 (No. 5 of 1942) [1942-06-27]
+# Ordinances of British Honduras Passed in the Year 1942, p 31-32
+# https://books.google.com/books?id=h6MpAQAAMAAJ&pg=RA6-PA95-IA44
+#
+# Definition of Time Ordinance, 1945 (No. 19 of 1945) [1945-12-15]
+# Ordinances of British Honduras Passed in the Year 1945, p 49-50
+# https://books.google.com/books?id=xaMpAQAAMAAJ&pg=RA2-PP1
+#
+# Definition of Time Ordinance, 1947 (No. 1 of 1947) [1947-03-11]
+# Ordinances of British Honduras Passed in the Year 1947, p 1-2
+# https://books.google.com/books?id=xaMpAQAAMAAJ&pg=RA3-PA1
+#
+# Time (Definition of) Ordinance  (Chapter 180)
+# The Laws of British Honduras in Force on the 15th Day of September, 1958 , Volume IV, p 2580
+# https://books.google.com/books?id=v5QpAQAAMAAJ&pg=PA2580
+#
+# Time (Definition of) (Amendment) Ordinance, 1968 (No. 13 of 1968) [1968-08-03]
+# https://books.google.com/books?id=xij7KEB_58wC&pg=RA1-PA428-IA9
+#
+# Definition of Time Act (Chapter 339)
+# Law of Belize, Revised Edition 2000
+# http://www.belizelaw.org/web/lawadmin/PDF%20files/cap339.pdf
+
+# From Paul Eggert (2020-11-03):
+# The transitions below are derived from P Chan's sources, except that the
+# 1973 through 1983 transitions are from Shanks & Pottenger since we have
+# no better data there.
+
 # Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
-Rule	Belize	1918	1942	-	Oct	Sun>=2	0:00	0:30	-0530
-Rule	Belize	1919	1943	-	Feb	Sun>=9	0:00	0	CST
+Rule	Belize	1918	1941	-	Oct	Sat>=1	24:00	0:30	-0530
+Rule	Belize	1919	1945	-	Feb	Sat>=8	24:00	0	CST
+Rule	Belize	1942	1944	-	Oct	Sat>=1	24:00	1:00	CWT
+Rule	Belize	1945	only	-	Oct	Sat>=1	24:00	1:00	CDT
+Rule	Belize	1945	only	-	Dec	15	24:00	0	CST
+Rule	Belize	1947	1967	-	Oct	Sat>=1	24:00	0:30	-0530
+Rule	Belize	1948	1968	-	Feb	Sat>=8	24:00	0	CST
 Rule	Belize	1973	only	-	Dec	 5	0:00	1:00	CDT
 Rule	Belize	1974	only	-	Feb	 9	0:00	0	CST
 Rule	Belize	1982	only	-	Dec	18	0:00	1:00	CDT
 Rule	Belize	1983	only	-	Feb	12	0:00	0	CST
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
-Zone	America/Belize	-5:52:48 -	LMT	1912 Apr
+Zone	America/Belize	-5:52:48 -	LMT	1912 Apr  1
 			-6:00	Belize	%s
 
 # Bermuda
-- 
2.25.1