21.1: calendar: daylight saving time wrong

[Ulrich Windl]

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In GNU Emacs 21.1.1 (i386-msvc-nt4.0.1381)
 of 2001-10-22 on buffy
configured using `configure --with-msvc (12.00)'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: DEU
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

In Emacs 21.1 the begin of DST in Europe is maked for April 7th in
calendar, while it actually happens on March, 31. In Emacs 20.7 (on Linux)
it seems correct however.


Recent input:
M-x c a l e n d a r <return> <help-echo> <help-echo> 
<down-mouse-1> <mouse-1> <help-echo> S <help-echo> 
h <help-echo> h <down> <down> <down> <up> <up> <up> 
<down> <down> <down> <down> <up> <up> <up> <up> <up> 
<up> <down> h <help-echo> <help-echo> <help-echo> <help-echo> 
M-x r e p <tab> o <tab> r <tab> <return>

Recent messages:
Marking holidays...done
Marking diary entries...done
Marking holidays...done
Marking diary entries...done
Checking holidays...
Sunday, 31 March 2002:  Easter Sunday
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