Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site sdchema.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!decvax!ittvax!dcdwest!sdcsvax!sdchema!gino From: gino@sdchema.UUCP (Eugene G. Youngerman) Newsgroups: net.games.trivia Subject: Re: Answers to my trivium...(trivium?) Message-ID: <328@sdchema.UUCP> Date: Thu, 7-Feb-85 15:22:25 EST Article-I.D.: sdchema.328 Posted: Thu Feb 7 15:22:25 1985 Date-Received: Mon, 11-Feb-85 07:59:05 EST References: <1595@gondor.UUCP> <874@ihuxk.UUCP> Reply-To: gino@sdchema.UUCP (Eugene G. Youngerman) Distribution: net Organization: U.C. San Diego Chemistry Dept Lines: 19 Summary: >Is it possible that there is something like a "super leap-year" that comes >once every couple of centuries, with an extra day (in addition to the leap >day - Feb. 29). I seem to recall the need for additional correction >that is provided by adding a day every couple of hundred years (maybe even >every 1000 years). I also seem to recall, but this part is much fuzzier, >that this extra day wouldn't be part of any month, but would be put between >Dec. 31 and Jan. 1. Does anyone else remember anything like this, or was >I just having a dream about strange, mystical calendars? > > As I recall, there is an inherent (negative error) of about 3 days every 400 years. This is solved by NOT having leap years in years that end in "00", unless the year is divisible (sp?) by 400. Thus there is a leap year in 2000, but not in 1700, 1800, 1900, or 2100. The errors past this point are so small that they just add or subtract the minutes (or seconds) between years. I am GINO!