/[emacs]/emacs/man/calendar.texi
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revision 1.33 by rms, Mon Mar 28 21:30:06 2005 UTC revision 1.34 by eggert, Thu Mar 31 20:14:03 2005 UTC
# Line 691  Their calendar consists of twelve months Line 691  Their calendar consists of twelve months
691  days, the next five have 30 days, and the last has 29 in ordinary years  days, the next five have 30 days, and the last has 29 in ordinary years
692  and 30 in leap years.  Leap years occur in a complicated pattern every  and 30 in leap years.  Leap years occur in a complicated pattern every
693  four or five years.  four or five years.
694    The calendar implemented here is the arithmetical Persian calendar
695    championed by Birashk, based on a 2,820-year cycle.  It differs from
696    the astronomical Persian calendar, which is based on astronomical
697    events.  As of this writing the first future discrepancy is projected
698    to occur on March 20, 2025.  It is currently not clear what the
699    official calendar of Iran will be that far into the future.
700    
701  @cindex Chinese calendar  @cindex Chinese calendar
702    The Chinese calendar is a complicated system of lunar months arranged    The Chinese calendar is a complicated system of lunar months arranged

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