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US daylight savings for 2007

From: Kevin Ryde
Subject: US daylight savings for 2007
Date: Thu, 21 Dec 2006 09:04:57 +1100
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux)

I noticed a couple of spots in the code and manual with US daylight
savings rule as first sunday in April, which I believe is changing for

2006-12-20  Kevin Ryde  <address@hidden>

        * calendar/cal-dst.el (calendar-dst-starts): Default to second Sunday
        in March.
        (calendar-dst-ends): Default to first Sunday in November.
        These are new US rules commencing 2007, per tzdata

and in the manual:

        * calendar.texi (Holidays): US daylight savings begins second Sunday
        in March for 2007 onwards.
        (Daylight Savings): Show new US default daylight savings rules, 2nd
        Sun in Mar to 1st Sun in Nov, now in cal-dst.el.

I'm not sure why daylight savings is mentioned in the "Holidays" node.
What it says about always using only the present definition isn't true
any more is it?  I'd be tempted to reduce the last paragraph to just
its first sentence.

        The dates used by Emacs for holidays are based on _current
        practice_, not historical fact.

Unless someone can think of a holiday where the rule has varied

Attachment: cal-dst.el.us-daylight-2007.diff
Description: Text Data

Attachment: calendar.texi.us-daylight-2007.diff
Description: Text Data

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