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). WWW: http://catcode.com/date/pcalc.html