From owner-freebsd-questions Thu Oct 21 5:20:50 1999 Delivered-To: freebsd-questions@freebsd.org Received: from axl.noc.iafrica.com (axl.noc.iafrica.com [196.31.1.175]) by hub.freebsd.org (Postfix) with ESMTP id 9756914BD6 for ; Thu, 21 Oct 1999 05:20:06 -0700 (PDT) (envelope-from sheldonh@axl.noc.iafrica.com) Received: from sheldonh (helo=axl.noc.iafrica.com) by axl.noc.iafrica.com with local-esmtp (Exim 3.040 #1) id 11eHCG-000DnS-00; Thu, 21 Oct 1999 14:19:56 +0200 From: Sheldon Hearn To: Graeme Tait Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Cron and daylight savings In-reply-to: Your message of "Thu, 21 Oct 1999 08:12:07 -0400." <380F0317.5C1E3A3@echidna.com> Date: Thu, 21 Oct 1999 14:19:56 +0200 Message-ID: <53037.940508396@axl.noc.iafrica.com> Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 21 Oct 1999 08:12:07 -0400, Graeme Tait wrote: > What happens if my machine is running local time with daylight savings > adjustments, and I schedule jobs between 2 and 3 am (or whenever the > transitions occurs)? > > Do they get skipped in the daylight savings transition in Spring and run > twice in the Fall? Yes. :-) See the BUGS section of the new crontab(5) manpage: BUGS If you're in one of the 70-odd countries that observe Daylight Savings Time, jobs scheduled during the rollback or advance will be affected. In general, it's not a good idea to schedule jobs during this period. For US timezones (except parts of IN, AZ, and HI) the time shift occurs at 2AM local time. For others, the output of the zdump(8) program's verbose (-v) option can be used to determine the moment of time shift. Ciao, Sheldon. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message