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To: Stephen Roome <steve@visint.co.uk>
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Subject: Re: 2000 Compliance / dates / time libs 
In-reply-to: Your message of "Tue, 29 Feb 2000 00:13:57 GMT."
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Date: Tue, 28 Oct 1997 00:44:01 +0000
From: Brian Somers <brian@awfulhak.org>
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> 
> I just set my clock to february 29 2000. Is this valid ?

The rule is:

  if (year%400)
    leap year
  else if (year%100)
    no leap year
  else if (year%4)
    leap year
  else
    no leap year

The whole mess only works up 'till the year 23XX AFAIR, then we have 
to skip a big chunk of time - and the UK will probably refuse again 
:-O

$ cal 9 1752 for a laugh, then read 

  ftp://ftp.freebsd.org/pub/FreeBSD/FreeBSD-current/src/usr.bin/cal/README

-- 
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <bri@OpenBSD.org>
      <http://www.Awfulhak.org>
Don't _EVER_ lose your sense of humour....