The swich with dailight savings time
Lars Tunkrans
lars at iclswe.icl.se
Fri Apr 12 08:12:05 AEST 1991
rvdp at cs.vu.nl (Ronald van der Pol) writes:
>>I have noticed that some of my cron jobs are running an hour later
>>than they are normally run. Example uucp.cleanup is supposed to
>>run at 23:45 but it is running at 00:45 instead. This has occured
>>since the swich to EDT. The system swiched the time on sunday
>>just like we would change the clocks automaticly. Now not all the
>>jobs are running late just some. Have I come across a bug with
>>SCO UNIX SYS V/386 Rel. 3.2.2. Or is there something that I should
>I think so. We run SCO 3.2.2 too :-( and our times are completely wrong:
>- it is 14:15 MET DST at the moment
>- 'date' says it is 13:15 MET
>- localtime(3) says it is 18:15 MET
>- our TZ is 'MET-1MET DST,M3.5.0,M9.5.0'
>What is going on here??
I dont think your TIMEZONE is rigth for SVR3.2 and Paris daylight time.
Here is what I use for 1991 Paris time:
TZ="MET-1DST-2;90/02,272/03"
Unfortunatley we have a case of pretty wierd thinking here:
Negative TIMEZONE values gives times east of Greenwich ( London ) while
positive TIMEZONE values gives times west of Greenwich. And not the other
way around which would be more logical, at least to me.
So since Paris daylight time is 2 hours ahead of GMT, it needs to be defined
with DST-2 otherwise UNIX dont know which time to shift to. There was no
value assosiated with DST in your example above.
lars.
--
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