Date::ISO is a perl extension for converting dates between ISO and
Gregorian formats.
Date::Manip is a series of modules designed to make any common date/time
operation easy to do. Operations such as comparing two times, calculating a
time a given amount of time from another, or parsing international times are
all easily done.
This Perl module is a direct translation of Steffen Beyer's excellent
Date::Calc module to use Perl only instead of a combination of Perl and C.
This package consists of a Perl module for all kinds of date calculations
based on the Gregorian calendar (the one used in all western countries
today), thereby complying with all relevant norms and standards:
ISO/R 2015-1971, DIN 1355 and, to some extent, ISO 8601 (where applicable).
Perl interface to libev - high-performance event loop/event model with
lots of features. It is modelled (very losely) after libevent and the
Event perl module, but is faster, scales better and is more correct,
and also more featureful. And also smaller.
This package includes a tool that parses a command table to generate a
simple command-line interface parser, the include files needed to compile
and use it, and the libraries needed to run programs that use it.
It was originally inspired by the Multics SubSystem library.
Quite often, when dealing with dates, we don't just want to know
information about one particular date, but about a range of dates. For
example, we may wish to know whether a given date is in a particular
range, or what the overlap is between one range and another. This module
lets you ask such questions.
This Perl module deals with Roman dates. Very useful for generating custom
headers for e-mail messages, or just to dazzle and confuse friends, relatives
and complete strangers.
DateTime::Astro implements functions used in astronomical calendars:
- Solar Longitude
- Solar Terms
- Lunar Longitude
- New Moons
... etc
This module is best used in environments where a C compiler and the MPFR
arbitrary precision math library is installed. It can fallback to using
Math::BigInt, but that would pretty much render it useless because of its speed
and loss of accuracy that may creep up while doing Perl to C struct conversions.
Traditional Chinese Calendar Implementation
DateTime::Calendar::Christian is the implementation of the combined Julian and
Gregorian calendar.
See DateTime for information about most of the methods.