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* The Emacs Calculator and calendar
@ 2012-10-05 19:13 Jay Belanger
  2012-10-05 19:24 ` Paul Eggert
                   ` (2 more replies)
  0 siblings, 3 replies; 47+ messages in thread
From: Jay Belanger @ 2012-10-05 19:13 UTC (permalink / raw)
  To: emacs-devel; +Cc: jay.p.belanger


Calc and the Emacs calendar use different calendar systems.
From the Calc manual:
  Calc uses a combination of the Gregorian and Julian calendars,
  following the history of Great Britain and the British colonies.
  This is the same calendar that is used by the `cal' program in most
  Unix implementations. 
and from the Emacs manual:
  The Emacs calendar displayed is _always_ the Gregorian calendar,
  sometimes called the "new style" calendar, which is used in most of the
  world today.  However, this calendar did not exist before the sixteenth
  century and was not widely used before the eighteenth century; it did
  not fully displace the Julian calendar and gain universal acceptance
  until the early twentieth century.  The Emacs calendar can display any
  month since January, year 1 of the current era, but the calendar
  displayed is always the Gregorian, even for a date at which the
  Gregorian calendar did not exist.
So, for example, the day before September 14, 1752 is 
September 2, 1752 according to Calc and September 13, 1752 according
to the calendar.

Is this acceptable, or should they be made consistent?

Jay



^ permalink raw reply	[flat|nested] 47+ messages in thread

end of thread, other threads:[~2012-10-13 14:05 UTC | newest]

Thread overview: 47+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-10-05 19:13 The Emacs Calculator and calendar Jay Belanger
2012-10-05 19:24 ` Paul Eggert
2012-10-05 20:51 ` Edward Reingold
2012-10-05 21:14   ` Pascal J. Bourguignon
2012-10-06 15:41   ` Richard Stallman
2012-10-06 22:07     ` Paul Eggert
2012-10-07  3:49       ` Richard Stallman
2012-10-07  6:22         ` Paul Eggert
2012-10-07 17:30           ` Richard Stallman
2012-10-07 18:23             ` Paul Eggert
2012-10-10  3:37               ` Richard Stallman
2012-10-07  6:36       ` Eli Zaretskii
2012-10-07  7:50         ` Paul Eggert
2012-10-07  8:45           ` Eli Zaretskii
2012-10-07 13:01             ` Juanma Barranquero
2012-10-07 14:08               ` Eli Zaretskii
2012-10-07 17:30           ` Richard Stallman
2012-10-07 17:57             ` Juanma Barranquero
2012-10-07 21:55         ` Sam Steingold
2012-10-08 13:39           ` Richard Stallman
2012-10-07  8:17       ` Stephen J. Turnbull
2012-10-07  7:56     ` Achim Gratz
2012-10-07  8:44       ` Eli Zaretskii
2012-10-07 13:57         ` Stefan Monnier
2012-10-07 20:32           ` Paul Eggert
2012-10-07 21:34             ` Tim Cross
2012-10-08  0:32             ` Stefan Monnier
2012-10-08  6:30               ` Paul Eggert
2012-10-08  7:28                 ` Ulrich Mueller
2012-10-08 13:56                   ` Stefan Monnier
2012-10-08 14:49                     ` Jay Belanger
2012-10-08  8:21                 ` James Cloos
2012-10-08 14:59                 ` Jay Belanger
2012-10-13  6:02                   ` Paul Eggert
2012-10-13 14:05                     ` Jay Belanger
2012-10-08 13:39             ` Richard Stallman
2012-10-08 19:34               ` Paul Eggert
2012-10-08 22:39                 ` Richard Stallman
2012-10-09  6:28                   ` Paul Eggert
2012-10-09 15:47                     ` Richard Stallman
2012-10-09 23:10                       ` Paul Eggert
2012-10-10  2:22                         ` Jay Belanger
2012-10-11 12:09                           ` Jason Rumney
2012-10-12  1:52                             ` Richard Stallman
2012-10-10  3:37                         ` Richard Stallman
2012-10-10 21:42                   ` Christoph Herzog
2012-10-05 21:17 ` Edward Reingold

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