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Date:      Sun, 30 Mar 1997 12:33:50 -0500 (EST)
From:      Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
To:        joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
Cc:        dv@kis.ru (Dmitry Valdov), freebsd-bugs@freebsd.org
Subject:   Re: cron & timezone
Message-ID:  <199703301733.MAA07080@khavrinen.lcs.mit.edu>
In-Reply-To: <19970330091913.IJ54321@uriah.heep.sax.de>
References:  <Pine.BSF.3.95q.970330032007.23988A-100000@xkis.kis.ru> <19970330091913.IJ54321@uriah.heep.sax.de>

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<<On Sun, 30 Mar 1997 09:19:13 +0200, j@uriah.heep.sax.de (J Wunsch) said:

> As Dmitry Valdov wrote:
>> fix: : change run time of /etc/daily from 02:00 to 01:59 or make cron know
>> summer <-> winter  changes.


> j@uriah 494% awk '$1 == "Rule" && $4 == "max" {print $8}' \
> /usr/src/share/zoneinfo/[a-s]* | sed -e 's/[su]$//' | sort | uniq -c

This sed command is actually bogus, since it eliminates the very
important distinction between switching:

1) at the specified local (possibly summer) time [no letter]
2) at the specified local standard/winter time [`s']
3) at the specified Universal time [`u']

Thus, the `EU' rules specify 1:00u (IIRC), which is of course 1:00 in
Great Britain, 2:00 in France and Central Europe, and 3:00 in Eastern
Europe.

> Hmm, while 0159 is a good bet, there are still some zones switching at
> 0100.  There's an impressive number of zones switching at 0000, much

The best time is probably around 0400 local time, but even then, if
Russia were to adopt the EU rules (not likely) it would still cause
problems for one of the Central Asian zones...

-GAWollman

--
Garrett A. Wollman   | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu  | O Siem / The fires of freedom 
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA|                     - Susan Aglukark and Chad Irschick



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