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libdate-jd-perl

conversion between flavours of Julian Date

For date and time calculations it is convenient to represent dates by a simple linear count of days, rather than in a particular calendar. This is such a good idea that it has been invented several times. If there were a single such linear count then it would be the obvious data interchange format between calendar modules. With several versions, calendar modules can use such sensible data formats and still have interoperability problems. Date::JD tackles that problem, by performing conversions between different flavours of day count. These day count systems are generically known as "Julian Dates", after the most venerable of them.

Among Julian Date systems there are also some non-trivial differences of concept. There are systems that count only complete days, and those that count fractional days also. There are some that are fixed to Universal Time (time on the prime meridian), and others that are interpreted according to a timezone. Some consider the day to start at noon and others at midnight, which is semantically significant for the complete-day counts. The functions of this module appropriately handle the semantics of all the non-trivial conversions.

Homepage:
Package version:0.003-1
Architecture:all
Distribution:Debian
Filename:libdate-jd-perl_0.003-1_all.deb

/usr/share/doc/libdate-jd-perl/README

NAME

Date::JD - conversion between flavours of Julian Date

DESCRIPTION

For date and time calculations it is convenient to represent dates by
a simple linear count of days, rather than in a particular calendar.
This is such a good idea that it has been invented several times.
If there were a single such linear count then it would be the obvious
data interchange format between calendar modules.  
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/usr/share/man/man3/Date::JD.3pm.gz

Date::JD(3pm)    User Contributed Perl Documentation   Date::JD(3pm)



NAME
       Date::JD - conversion between flavours of Julian Date

SYNOPSIS
               use Date::JD qw(jd_to_mjd mjd_to_cjdn cjdn_to_rd);

               $mjd = jd_to_mjd($jd);
               ($cjdn, $cjdf) = mjd_to_cjdn($mjd, $tz);
               $rd = cjdn_to_rd($cjdn, $cjdf);

               # and 253 other conversion f
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/usr/share/doc/libdate-jd-perl/changelog.Debian.gz

libdate-jd-perl (0.003-1) unstable; urgency=low

  * Initial Release (closes: Bug#575987).

 -- Ivan Kohler <ivan-debian@420.am>  Tue, 30 Mar 2010 21:22:53 -0700

/usr/share/doc/libdate-jd-perl/changelog.gz

version 0.003; 2009-03-22

  * list all conversion functions explicitly in the documentation

  * te
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/usr/share/doc/libdate-jd-perl/copyright

Format-Specification: http://svn.debian.org/wsvn/dep/web/deps/dep5.mdwn?op=file&rev=135
Maintainer: 
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