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Full Discussion: Invalid date
Top Forums UNIX for Advanced & Expert Users Invalid date Post 303023976 by MadeInGermany on Wednesday 26th of September 2018 03:06:47 PM
Old 09-26-2018
Now I see, you want 1 day less than a given date.
It should work. I successfully checked with several versions of GNU date.
If even
Code:
date +"%Y%m%d" --date "20180812 - 1 day"

does not work, then I suspect a bug in your date program.

Last edited by MadeInGermany; 09-26-2018 at 04:22 PM..
 

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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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