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Full Discussion: Function to find day of any given date.
Top Forums Shell Programming and Scripting Function to find day of any given date. Post 302193985 by Annihilannic on Monday 12th of May 2008 02:49:58 AM
Old 05-12-2008
You can use perl's date and time functions for this:

Code:
#!/usr/bin/perl

use POSIX;
$time_t = POSIX::mktime( 0, 0, 0, $ARGV[1], $ARGV[0]-1, $ARGV[2]-1900);
printf "%s\n",strftime("%A",localtime($time_t));

Note that I had to subtract 1 from the month (it uses 0 - 11) and 1900 from the year (it counts 1900 as 0, 1901 as 1, 2008 as 108, etc.).
 

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LEARN ABOUT REDHAT

conjunct

CONJUNCT(1)						      General Commands Manual						       CONJUNCT(1)

NAME

       conjunct - find dates of equinox or new or full moon

SYNOPSIS

       conjunct [options]

DESCRIPTION

       conjunct  searches  for	one of these events: spring equinox (default), summer solstice, autumn equinox, winter solstice, new moon, or full
       moon.

OPTIONS

       -s, --start date
	      Set starting date (default is current date).  The date may be either a Julian day number (e.g. 2454180.0 for noon, 2007 March 20) or
	      an ISO 8601 date (e.g. 2007-03-20).

       -e, --end date
	      Set ending date (default is one year from now).

       -V, --vernal, --spring
	      Search for spring equinox (default).

       -S, --summer
	      Search for summer solstice.

       -A, --autumn, --fall
	      Search for autumn equinox.

       -W, --winter
	      Search for winter solstice.

       -N, --newmoon
	      Search for new moon.

       -F, --fullmoon
	      Search for full moon.

       -h, --help
	      Show summary of options.

SEE ALSO

       aa(1).

AUTHOR

       conjunct was written by Stephen L. Moshier <steve@moshier.net>.

       This manual page was written by James R. Van Zandt <jrv@debian.org>, for the Debian project (but may be used by others).

								  August 24, 2006						       CONJUNCT(1)
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