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Top Forums Shell Programming and Scripting convert Julian date to calender date Post 302116665 by Perderabo on Monday 7th of May 2007 12:55:36 PM
Old 05-07-2007
Quote:
Originally Posted by srikanthus2002
Hi,

I have script in unix which creates a julian date like 126 or 127

I want convert this julian date into calender date

ex : input 127
output 07/may/2007 or 07/05/2007 or 07/05/07
day-of-year != julian date
Read Julian day. (I love the way that article self-adjusts it's examples to the current day.) datecalc implements Modified Julian Day as described in that article:
$ datecalc -j 2007 5 7
54227
$

To convert that to day-of year:
$ echo $(( $(datecalc -j 2007 5 7) - $(datecalc -j 2007 1 1) +1))
127

To convert back, just reverse the operation:
$ datecalc -j $(( 127 + $(datecalc -j 2007 1 1) -1))
2007 5 7
$
 

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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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