The following module was proposed for inclusion in the Module List:
modid: Date::SundayLetters
DSLIP: cdpfp
description: Calculate the sunday letter for a given day
userid: RBOW (Rich Bowen)
chapterid: 6 (Data_Type_Utilities)
communities:
[EMAIL PROTECTED]
similar:
Date::Doomsday, Date::DayOfWeek
rationale:
The ancient romans, who had a 8 day week, labelled the days in
their calendar with a 8-letter cycle A..H, with the first day of the
year always being A. Knowing what letter was given to the first
market day in a given year, you would then know, for the whole year,
when market day would be.
When the 7-day week came into general use, this same technique was
used, except that the H was dropped. The market-day reasoning was
then used to figure out when the Sundays were. These letters came to
be called the "sunday letters."
The letter of the first sunday of a given year is called the sunday
letter for that year. And the letter for a given day is also called
the sunday letter for that day.
Leap years are strange, as always. In a yeap year, the 24th and
25th of February are both F days. Consequently, leap years have two
sunday letters - one for days before the 24th of February, and a
different one for days after the 24th of February.
This module calculates, for any given day of the year, what the
"sunday letter" is for that day. Or, given a year, it will calculate
the sunday letter(s) for that year.
Reference: The Oxford Companion to the Year, page 829-832.
enteredby: RBOW (Rich Bowen)
enteredon: Sun Jun 10 13:57:21 2001 GMT
The resulting entry would be:
Date::
::SundayLetters cdpfp Calculate the sunday letter for a given day RBOW
Thanks for registering,
The Pause Team
PS: The following links are only valid for module list maintainers:
Registration form with editing capabilities:
https://pause.perl.org/pause/authenquery?ACTION=add_mod&USERID=dc000000_29108546bfdc76a2&SUBMIT_pause99_add_mod_preview=1
Immediate (one click) registration:
https://pause.perl.org/pause/authenquery?ACTION=add_mod&USERID=dc000000_29108546bfdc76a2&SUBMIT_pause99_add_mod_insertit=1
