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From: jwp@uwmacc.UUCP (Jeffrey W Percival)
Newsgroups: net.astro
Subject: Julian day/calendar info needed
Message-ID: <1779@uwmacc.UUCP>
Date: Tue, 10-Dec-85 14:11:54 EST
Article-I.D.: uwmacc.1779
Posted: Tue Dec 10 14:11:54 1985
Date-Received: Thu, 12-Dec-85 06:47:40 EST
Distribution: net
Organization: UWisconsin-Madison Academic Comp Center
Lines: 13

I am trying to make the connection between a known
Julian day number (today, say) and the advertised
"day 0", Jan 1 4713 BC.  That is, starting from
today, what considerations are necessary when counting
down through all the years to 4713 BC?  Do I skip
the year 0?  What about 1752, the year of the great
calendar switch (355 days?)?  Do BC leap years work
the same way as AD years (e.g. 4,8,12,... BC = 366 days)?

I don't need source code for any algorithms, just the info.
Thanks!
-- 
	Jeff Percival ...!uwvax!uwmacc!jwp