[ntp:questions] question about DST

Unruh unruh-spam at physics.ubc.ca
Sat May 31 17:01:54 UTC 2008


David Woolley <david at ex.djwhome.demon.co.uk.invalid> writes:

>asraikhn at gmail.com wrote:

>> 
>> Pakistan.

>The Olson data indicates that there was a previous use of DST in 2002. 
>If that didn't happen, it needs fixing to give correct historic information.

>It has had data for 2008 since May 19th, although it looks like they 
>could do with more official information; if the transition time is 
>actually 00:01:00 local wall clock time, rather than 00:00:00 please 
>submit a correction, and if possible include a copy of, or a link to, an 
>official document - English would be better, but I'm sure they would be 

All the web pages state midnight.
And many also state that DST was used in 2002 but failed to catch on due to
mass confusion. Announcing a change two weeks before they are to happen
seems guarenteed to cause mass confusion again.


>able to find someone who can read Urdu (the submission information is at 
>the top of the relevant file (asia) - it doesn't require supporting 
>documents, but I can't see that they will do any harm:

>=========================================
># From Arthur David Olson (2008-05-19):
># XXX--midnight transitions is a guess; 2008 only is a guess.

># Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE 
>LETTER/S
>Rule Pakistan   2002    only    -       Apr     Sun>=2  0:01    1:00    S
>Rule Pakistan   2002    only    -       Oct     Sun>=2  0:01    0       -
>Rule Pakistan   2008    only    -       Jun     1       0:00    1:00    S
>Rule Pakistan   2008    only    -       Sep     1       0:00    0       -
>=========================================
>"man zic", on a system that supports Olson data, tells you how to 
>interpret the files and how to create new binary versions.

>The Microsoft article also gives information for manually updating 
>Windows for the Pakistan change.  I believe they are using 00:00:00 as 
>the transition time.

>It looks like neither Pakistan nor Morocco has considered computer 
>useres in the timing of the announcement of the DST legislation.




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