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Date: Tue, 29 Feb 2000 04:57:07 +0000 (GMT)
From: Stephen Roome <steve@visint.co.uk>
To: "Jonathan M. Bresler" <jmb@FreeBSD.ORG>
cc: freebsd-questions@FreeBSD.ORG
Subject: Re: 2000 Compliance / dates / time libs
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On Mon, 27 Oct 1997, Jonathan M. Bresler wrote:

> Stephen Roome wrote:
> > 
> > 
> > I just set my clock to february 29 2000. Is this valid ?
> 
> 	the algorithm, as i understand it is:
> 
> 	if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
> 		it is a leap year.
> 
> 	this is only good back till the switch from julian to gregorian
> 	calendars.

[You stole this from k&r didn't you =), well, that's the only place I
remember seeing this, especially in this format in C.]

But anyway, that was my assumption as well, but I've heard otherwise and
ensuring that FreeBSD gets the leap/non-leap year bit of 2000 correct is
probably quite important.

So when (or if) does the julian/gregorian switch take place and have you
got any hints where I should "point my browser and surf to", or perhaps a
slightly reliable source of information such as a book.

I've heard (I don't trust this source though!) that there maybe an ISO
committee for this. 

	Steve.

Steve Roome - Vision Interactive Ltd.
Tel:+44(0)117 9730597 Home:+44(0)976 241342
WWW: http://dylan.visint.co.uk/