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Re: does Calendar understand DST rules for past years?

From: Richard Stallman
Subject: Re: does Calendar understand DST rules for past years?
Date: Mon, 25 Dec 2006 11:53:16 -0500

It seems that the best thing to do is simply delete this paragraph:

>       The dates used by Emacs for holidays are based on @emph{current
>     practice}, not historical fact.  Historically, for instance, the start
>     of daylight savings time and even its existence have varied from year to
>     year, but present United States law mandates that daylight savings time
>     begins on the first Sunday in April.  When the daylight savings rules
>     are set up for the United States, Emacs always uses the present
>     definition, even though it is wrong for some prior years.

(I see no need to document in the manual the possibility of
setting calendar-dst-check-each-year-flag to nil.)

Do you see any problem with that solution?
Any more that needs to be done?

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