Date::DayOfWeek - Determine the day of the week for any date.
use Date::DayOfWeek; $dow = dayofweek( 25, 10, 1971 ); # dd, mm, yyyy
Calculates the day of the week for any date in the Gregorian calendar (1563 and following). Based on the Doomsday algorithm of John Conway.
$dow = dayofweek( 25, 10, 1971 ); $dow = dayofweek( 4, 7, 1776 );
Returns the day of the week for any date between 1500 and 2699.
Month should be in the range 1..12
The day of week that is returned is an integer in the range 0..6, with 0 = sunday, 1 = monday, etc.
Rich Bowen (firstname.lastname@example.org)
$Log: DayOfWeek.pm,v $ Revision 1.22 2003/02/02 13:40:37 rbowen Change link in documentation. Other minor cosmetic changes. Revision 1.21 2001/12/22 01:28:54 rbowen Documentation updates. Revision 1.20 2001/10/10 02:35:07 rbowen Bug reported by Francois Claveau. Revision 1.19 2001/08/25 21:28:14 rbowen Moved files to lib directory Removed 5.6 dependencies. Revision 1.18 2001/08/03 04:24:39 rbowen Alter locations of modules - moved into Date subdir. Added to MANIFEST No longer reqiure 5.005_62. Not sure why that was there. Revision 1.17 2001/06/11 01:49:05 rbowen Additional docs. Added Sneeze.pm Revision 1.16 2001/06/10 18:46:03 rbowen Moved isleap functionality into Date::Leapyear. Added Birthday.pm and Nails.pm as examples of the strange things that people believe - or believed a few hundred years ago, with regard to days of the week. Revision 1.15 2001/06/06 02:29:14 rbowen Added some more doomsday tests. Removed dayofweek tests that referred to years before the Gregorian calendar. Extended the range of Doomsday.pm indefinately into the future. And a small bug fix in DayOfWeek.pm Revision 1.14 2001/06/06 01:41:45 rbowen Made the calculation a little more elegant, if somewhat less informative. Thanks for patch from Jerrad Pierce. Thanks for various suggestions from David Pitts. Revision 1.13 2001/05/27 19:34:46 rbowen Rearranged argument order. day month year makes more sense. Revision 1.12 2001/05/27 03:44:03 rbowen Need to mod return value by 7. Revision 1.11 2001/05/27 03:41:31 rbowen This seems to work on all the dates that I've tested it for. More testing is needed. Revision 1.10 2001/05/27 03:13:57 rbowen Add DayOfWeek to repository.