Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!torsqnt!geac!blister!greg
From: greg@blister.Solbourne.COM (Greg Foisy)
Newsgroups: comp.sys.handhelds
Subject: Re: Leap Years
Message-ID: <1990Aug12.144937.4275@blister.Solbourne.COM>
Date: 12 Aug 90 14:49:37 GMT
References: <6758.26c2a07b@jetson.uh.edu> <648@atcmpe.atcmp.nl>
Reply-To: greg@blister.UUCP (Greg Foisy)
Organization: Solbourne Computer of Canada, Ltd.
Lines: 50

In article <648@atcmpe.atcmp.nl> jc@atcmp.nl (Jan Christiaan van Winkel) writes:
>From article <6758.26c2a07b@jetson.uh.edu>, by math1i7@jetson.uh.edu:
>) In article <31210047@hpcvia.CV.HP.COM>, scottb@hpcvia.CV.HP.COM (Scott_Burke) writes:
>)> 
>)> Would someone please verify that I have the leap year algorithm correct:
>)> 
>)>   February has 28 days UNLESS the year is divisible by   4, in which case
>)>   February has 29 days UNLESS the year is divisible by 100, in which case
>)>   February has 28 days UNLESS the year is divisible by 400, in which case
>)>   February has 29 days.
>) 
>) Scott, I have never heard about the 100 and 400 year rules... I had always
>) assumed that:
>) 	IF 0 year 4 MOD == THEN 28 ELSE 29 END
>) Are the 100 and 400 year rules there to correct for the fraction of
>) a second off each year is from a "true" 365 or 366 days?
>) 
>) Gordon
>Scott was right. I.e. 1904, 1908, 1912,... were leappyears,
>1900, 2100, 2200, 2300 are not but 2000 is. (Ever wonder why 
>electronic watches keep the correct date until 2099...:-)

	Well, he was kinda right... quoting from parts of the Gregorian Year
	Table:

	Leap Years
	----------
	Every 4th year but only those centesimal years divisible by 400.

	FYI, the rest of the info that resides in a year table:

	Year Chronology
	---------------
	From Roman year 754, the year immediately following the birth of Christ
	as placed by Dionysus Exiguus in the 753rd year of Rome

	Year Begins
	-----------
	Ten days after the winter solstice

	Number of Days
	--------------
	Common Years	365
	Leap years	366

-- 
	"The most overlooked advantage to owning a computer is that if they
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