[LEAPSECS] Daylight Time snafus

[Matsakis, Demetrios]

Sometimes it doesn't matter how much notice is given.  This morning I got an email from someone asking why his clock just jumped to daylight time.    I've had many emails from people whose clocks incorporate a change late, which could be due to radio reception problems among other things.   I've also gotten some from people whose clocks are pre-programmed with the old American daylight time rules, or European ones.   But this is a first for early daylight.

As always programming errors are the default guess.   Last leap year we even suspected one product had an issue related to February 29.  Only the manufacturers know for sure.

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Message: 2
Date: Mon, 24 Feb 2014 06:09:17 -0700
From: Rob Seaman <seaman at noao.edu>
Subject: [LEAPSECS] Short notice for DST changes
To: Leap Second Discussion List <leapsecs at leapsecond.com>
Message-ID: <777B74EA-DBEF-429A-BAC9-15524B06F4E1 at noao.edu>
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For five years running the Chilean government has provided very short notice of changes to the local daylight saving time rules.  This year only 2.5 weeks advance notice (shifting off DST was scheduled for March 8):