Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site sunybcs.UUCP Path: utzoo!watmath!clyde!floyd!harpo!seismo!rochester!rocksvax!sunybcs!colonel From: colonel@sunybcs.UUCP (George Sicherman) Newsgroups: net.followup Subject: Re: Perpetual Calendar Message-ID: <1077@sunybcs.UUCP> Date: Mon, 20-Feb-84 15:02:43 EST Article-I.D.: sunybcs.1077 Posted: Mon Feb 20 15:02:43 1984 Date-Received: Wed, 22-Feb-84 07:22:13 EST References: <392@sequent.UUCP> Organization: SUNY/Buffalo Computer Science Lines: 14 Your perpetual calendar doesn't go back before 1753 because the present system (3 centennial years out of 4 common) was adopted by Parliament in 1752. Pope Gregory had already ordained it for the Catholic world in 1582, dropping 10 days from October to re-sync. Parliament had to drop 11, because 1700 was a leap year in England. If I remember correctly, Pope Gregory preserved the succession of weekdays, but Parliament did not - Monday the 2nd was followed by Saturday the 14th. This makes it impossible to get a meaningful day of the week for any day before September 14, 1752. (I still don't see how Italy and England got together again!) Col. G. L. Sicherman ...seismo!rochester!rocksvax!sunybcs!colonel