[time zone problem about 2017c]
Dear all: Hello. I'm a user of time zone data in IANA. Lately I found a problem when I used it in Android O system. external\icu\tools\update-tzdata.py I used the tool in the below path to deal with the data tzcode2017c.tar.gz<https://www.iana.org/time-zones/repository/releases/tzcode2017c.tar.gz>. Then the error occurred. Finally I found the way to solve it. It seemed that africa file and backzone file have a duplicated data: # South Sudan Zone Africa/Juba 2:06:24 - LMT 1931 2:00 Sudan CA%sT 2000 Jan 15 12:00 3:00 - EAT I deleted one in backzone, then it worked. Now I'm wondering if this is mistake. And what are the influences?
Zhouyuxiang wrote:
Now I'm wondering if this is mistake. And what are the influences?
It was a mistake. Prior to 2017c, Africa/Juba was a link to Africa/Khartoum, because South Sudan (Juba) and Sudan (Khartoum) had identical timezone history. (They were one country until 2011.) But recently Sudan announced that it's changing from UT+3h to UT+2h, effective 2017-11-01, and South Sudan is not changing to match, so these two can no longer be linked. 2017c is the first with the new Africa/Khartoum information, and so Africa/Juba had to become a distinct zone. With it ceasing to be a link, its entry in "backzone" should have been removed, but that was mistakenly not done. No one noticed in advance of release because few people use "backzone". -zefram
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Zefram -
Zhouyuxiang