i.e., back BEYOND the year 1582 when this calendar was first decreed by the Catholic Pope Gregory XIII! In order to simplify calculations, this module projects the gregorian calendar back until the year 1 A.D. The upper limit for any year number in this module is only given by the size of the largest positive integer that can be represented in a variable of the C type "int" on your system, which is at least 32767, according to the ANSI C standard (exceptions see below). (See the section "RECIPES" at the bottom of this document for solutions to common problems!) $string = Date::Calc::Version() IMPORTANT NOTES If (($year,$month,$day) = Parse_Date($string)) If (($year,$month,$day) = Decode_Date_US2($string)) If (($year,$month,$day) = Decode_Date_EU2($string)) $oldlang = Language($newlang) # DEPRECATED $string = Day_of_Week_Abbreviation($dow) $string = Date_to_Text_Long($year,$month,$day) $string = Date_to_Text($year,$month,$day) If (($century,$year,$month,$day) = Uncompress($date)) If (($year,$month,$day) = Decode_Date_US($string)) If (($year,$month,$day) = Decode_Date_EU($string)) ($year,$month,$day) = Easter_Sunday($year) $time = Date_to_Time($year,$month,$day, $hour,$min,$sec) $time = Mktime($year,$month,$day, $hour,$min,$sec) ($year,$month,$day) = Monday_of_Week($week,$year) $week = Week_of_Year($year,$month,$day) # DANGEROUS ($week,$year) = Week_of_Year($year,$month,$day) # RECOMMENDED $week = Week_Number($year,$month,$day) # DEPRECATED If (check_business_date($year,$week,$dow))
Date calculator how to#
If nevertheless you can't figure out how to solve a particular problem, please let me know! (See e-mail address at the end of this document.) SYNOPSIS use Date::Calc qw( See the section "RECIPES" at the bottom of this document for solutions to common problems! Some (mainly protestant) countries continued to use the Julian calendar (used until then) until as late as the beginning of the 20th century.įinally, note that this package is not intended to do everything you could ever imagine automagically for you it is rather intended to serve as a toolbox (in the best of UNIX spirit and traditions) which should, however, always get you where you want to go. even though the Gregorian calendar was only adopted in 1582, mostly by the Catholic European countries, in obedience to the corresponding decree of Pope Gregory XIII in that year. Note that this package projects the Gregorian calendar back until the year 1 A.D. This is not true, however, for the import/export functions in this package which are an interface to the internal POSIX date and time functions of your system, which can only cover dates in the following ranges: 0 00:00:00 GMT. The module of course handles year numbers of 2000 and above correctly ("Year 2000" or "Y2K" compliance) - actually all year numbers from 1 to the largest positive integer representable on your system (which is at least 32767) can be dealt with. (See also for a scan of part of the " DIN 1355" document (in German)).
Date calculator iso#
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). Date::Calc - Gregorian calendar date calculations MOTTO
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