| Extracted from Pike v7.8 release 866 at 2018-07-18.

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Calendar
Calendar.YMD
Calendar.YMD.Week

# Class Calendar.YMD.Week

Description

  The Calendar week represents a standard time period of a week. In the Gregorian calendar, the standard week starts on a sunday and ends on a saturday; in the ISO calendar, it starts on a monday and ends on a sunday.

  The week are might not be aligned to the year, and thus the week may cross year borders and the year of the week might not be the same as the year of all the days in the week. The basic rule is that the week year is the year that has the most days in the week, but since week number only is specified in the ISO calendar - and derivates - the week number of most calendars is the week number of most of the days in the ISO calendar, which modifies this rule for the Gregorian calendar; the week number and year is the same as for the ISO calendar, except for the sundays.

  When adding, moving and subtracting months to a week, it falls back to using days.

  When adding, moving or subtracting years, if tries to place the moved week in the resulting year.