* NEWS: Mention this. * asia (Shang): Switch to data from 2014 Li Yu paper. --- NEWS | 3 +++ asia | 34 +++++++++++++++++++++++++++------- 2 files changed, 30 insertions(+), 7 deletions(-) diff --git a/NEWS b/NEWS index a24d4b3..e217a50 100644 --- a/NEWS +++ b/NEWS @@ -42,6 +42,9 @@ Unreleased, experimental changes zic turns this into 01:00 on the day after September's second Saturday, which is the best that POSIX or C platforms can do. + Incorporate 1940-1949 Asia/Shanghai DST transitions from a 2014 + paper by Li Yu, replacing more-questionable data from Shanks. + Changes to time zone abbreviations Use "PST" and "PDT" for Philippine time. (Thanks to Paul Goyette.) diff --git a/asia b/asia index 365593a..a7b5c75 100644 --- a/asia +++ b/asia @@ -286,6 +286,29 @@ Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon # China +# From Paul Eggert (2018-10-02): +# The following comes from Table 1 of: +# Li Yu. Research on the daylight saving movement in 1940s Shanghai. +# Nanjing Journal of Social Sciences. 2014;(2):144-50. +# http://oversea.cnki.net/kns55/detail.aspx?dbname=CJFD2014&filename=NJSH20140... +# The table lists dates only; I am guessing 00:00 and 24:00 transition times. +# Also, the table lists the planned end of DST in 1949, but the corresponding +# zone line cuts this off on May 27, when the Communists took power. +# +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Shang 1940 only - Jun 1 0:00 1:00 D +Rule Shang 1940 only - Oct 12 24:00 0 S +Rule Shang 1941 only - Mar 15 0:00 1:00 D +Rule Shang 1941 only - Nov 1 24:00 0 S +Rule Shang 1942 only - Jan 31 0:00 1:00 D +Rule Shang 1945 only - Sep 1 24:00 0 S +Rule Shang 1946 only - May 15 0:00 1:00 D +Rule Shang 1946 only - Sep 30 24:00 0 S +Rule Shang 1947 only - Apr 15 0:00 1:00 D +Rule Shang 1947 only - Oct 31 24:00 0 S +Rule Shang 1948 1949 - May 1 0:00 1:00 D +Rule Shang 1948 1949 - Sep 30 24:00 0 S + # From Guy Harris: # People's Republic of China. Yes, they really have only one time zone. @@ -336,12 +359,9 @@ Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon # http://data.people.com.cn/pic/101p/1988/04/1988041201.jpg # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Shang 1940 only - Jun 3 0:00 1:00 D -Rule Shang 1940 1941 - Oct 1 0:00 0 S -Rule Shang 1941 only - Mar 16 0:00 1:00 D -Rule PRC 1986 only - May 4 2:00 1:00 D -Rule PRC 1986 1991 - Sep Sun>=11 2:00 0 S -Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D +Rule PRC 1986 only - May 4 2:00 1:00 D +Rule PRC 1986 1991 - Sep Sun>=11 2:00 0 S +Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D # From Anthony Fok (2001-12-20): # BTW, I did some research on-line and found some info regarding these five @@ -543,7 +563,7 @@ Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Beijing time, used throughout China; represented by Shanghai. Zone Asia/Shanghai 8:05:43 - LMT 1901 - 8:00 Shang C%sT 1949 + 8:00 Shang C%sT 1949 May 27 8:00 PRC C%sT # Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi # / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.) -- 2.17.1