From: utzoo!henry
Newsgroups: net.general
Title: Great Cycle of Gregorian calendar 
Article-I.D.: utzoo.2518
Posted: Tue Oct 12 17:00:13 1982
Received: Tue Oct 12 17:00:13 1982

The Gregorian calendar has an overall period of 400 years, due to the
handling of leap centuries.  The first such Great Cycle completes on
15 Oct 1982 -- this Friday.