[tz] Problem with historical Asia/Manila?
Paul Goyette
paul at whooppee.com
Thu Mar 2 09:34:43 UTC 2017
On Thu, 2 Mar 2017, Paul Eggert wrote:
> Paul Goyette wrote:
>> According to the asia file, the Philippines jumped 24 hours on May 11,
>> 1899,
>> from -15:56:00 to +8:04:00 (they moved the international date line?)
>>
>> # Zone NAME GMTOFF RULES FORMAT [UNTIL]
>> Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
>> 8:04:00 - LMT 1899 May 11
>> 8:00 Phil +08/+09 1942 May
>
> Yes, they moved the date line. But this occurred in 1844, not in 1899. I
> think you misread the UNTIL column. zdump -i reports:
>
> TZ="Asia/Manila"
> - - -1556 LMT
> 1845-01-01 00 +0804 LMT
> 1899-05-10 23:56 +08
> ...
>
> so the big change occurred in 1844, and the four-minute change occurred in
> 1899, which is what the table says.
Yes, as expected, I misinterpreted the data! Thanks for clarifying!
(FWIW, zdump indeed shows the big jump going from 1844-12-30 23:59:59
to 1845-01-01 00:00:00 completely skipping over Dec. 31st!)
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