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).
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