The Calendar year reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Calendar year

In the Gregorian calendar in common use, the calendar year begins on January 1, and ends on December 31. Other alignments of the 12-month period can be used for purposes of accounting (see fiscal year).

More generally, a calendar year begins on the New Year's day of the given calendar system and ends on the day before the following New Year's day.

See also other calendars

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