Hail Eris!
What better way to show your devotion to the Goddess of Chaos and Discord herself than to show the Discordian Date wherever and whenever you would show a mundane date?
There are times you want to check how old you are (in years, months, days) or how long you need to wait for the next flash sale... pdd (python3 date diff) is a small cmdline utility to calculate date and time difference. If no program arguments are specified it shows the current date, time and timezone.
http://github.com/Appendium/objectlabkit
A set of modules to handle common financial functions. The first module is Date Calculator which handles holidays and weekends. A set of rules are implemented to deal with days falling on a holiday: Forward, Backward, Modified Forward, Modified Backward
New FX Rate Calculators
Convert between calendars and work with date ranges.
This calculator will allow you to convert between many different world calendar schemes and calculate ranges and ages based on these calendars. The calculator also has a script language that allows you to create variations of the built-in calendars: calendars that shift the new year to a different day, hybrid calendars that switch between schemes, local observational calendars that depend on a particular location, year counts that change for specific eras (regnal calendars) and calendars...
Goal of this project is, creating a calculator that can handle all date and time operations that a user may need.
You can operate with milliseconds as months, years or dates.
Examples:
2013-11-25 + 3d => 2013-11-28
2013-11-25 - 2013-10-20 => 36d 1h
5h + 6h => 11h
1382220000t => 2013-10-20
Breaks down the research process into pre-defined steps. Users enter a start date and end date for an assignment and the Assignment Calculator will compute the dates s/he needs to complete each step. Written by the University of Minnesota Libraries.
Two full-fledged classes dealing with dates (class cDate) and spans of time class cPeriod) written in PHP. The datecalc project is a sub-project of tbvs (http://sourceforge.net/projects/tbvs).
Two full-fledged object-oriented classes dealing with dates (class cDate) and spans of time (class cPeriod) written in C++.
The datecalc-cpp project is a sub-project of tbvs-hr (https://sourceforge.net/projects/tbvs-hr).
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Joda-time based utility Java class that allows calculation related to downtimes. You set a list of downtimes (date-time intervals), and the calculator will give you the ending date-time of a duration, and uptime between two points in time, too.
Easter Calculator for Mobile Phone J2ME compliant. You can calculate the date for several years or you can verify if one date is an Easter holiday or not.
A simple command to convert calendar dates to julian dates. Quite useful in
timing situations where you need elapsed time between dates.
Also useful for astronomy applications.
Canyon is a date calculator utility that aims to provide handy methods to perform arithmetic calculations on java.util.Date objects. Developers are free to plug in their own localized instances of java.util.Calendar or to use the default GregorianCalenda