[tz] China DST
chan jason
legco at outlook.com
Mon May 7 06:14:15 UTC 2018
Hi,
There are some mistakes in the rules of PRC. The start and end time of DST in China should be 2:00 (i.e. 2:00 to 3:00 at the start and 2:00 to 1:00 at the end). Also in 1988, the start date should be 17 May instead of 10 May.
Government notices about summer time:
1986-04-12
http://www.zj.gov.cn/attach/zfgb/198608.pdf p.21-22 (To establish summer time from 1986. On 4 May, set the clocks ahead one hour at 2 am. On 14 September, set the clocks backward one hour at 2 am.)
1987-02-15
http://www.gov.cn/gongbao/shuju/1987/gwyb198703.pdf p.114 (Summer time in 1987 to start from 12 April until 13 September)
1987-09-09
http://www.gov.cn/gongbao/shuju/1987/gwyb198721.pdf p.709 (From 1988, summer time to start from 2 am of the first Sunday of mid-April until 2 am of the first Sunday of mid-September)
1992-03-03
http://www.gov.cn/gongbao/shuju/1992/gwyb199205.pdf p.152 (To suspend summer time from 1992)
The first page of People's Daily on 12 April 1988 stating that summer time to begin on 17 April.
http://data.people.com.cn/pic/101p/1988/04/1988041201.jpg
Proposed rules:
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
Regards,
P Chan
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