Linux System - Table 10 > Packages - Table 10 > perl-Date-Calc

This package consists of a C library and a Perl module (which uses the C library, internally) 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). (See also ttp://www.engelschall.com/u/sb/download/Date-Calc/DIN1355/ for a scan of part of the "DIN 1355" document (in German)).