Re: NSDatePicker behaviour is odd when typing date
Re: NSDatePicker behaviour is odd when typing date
- Subject: Re: NSDatePicker behaviour is odd when typing date
- From: Michael Hall <email@hidden>
- Date: Sun, 18 Mar 2007 21:00:25 -0500
On Mar 18, 2007, at 8:13 PM, Michael Hall wrote:
On Mar 18, 2007, at 1:19 PM, Nick Zitzmann wrote:
The Julian calendar assumes that Earth circles around the sun in
365.25 days, when it's actually a little bit less than that, so
the calendar came out of sync with the seasons a long time ago.
The Gregorian calendar fixes that problem by subtracting a few
leap days.
Nitpick on the DatePicker I guess.
But I think Julian assumed 365 while the year is actually a little
bit more than that. Closer to 365.2525, which is why in the
gregorian there's 1 extra day a leap year and one more yet every 4
hundred years.
Sorry to reply to my own post, but I checked Wikipedia. You are
correct that the Julian calendar was long and needed days dropped.
The julian appears to have initially been based strictly on 365.25,
off by the .0025 I'd assume and was 'reformed' to a weird scheme of
alternating 355,377, and 378 day with years averaging out to 366 1/4.
That may actually be a bit off. I've re-read it again, and got more
confused.
Anyhow while the year is actually longer than 365.25 the Julian
calendar did need shortening
Mike Hall mikehall at spacestar dot net
http://www.spacestar.net/users/mikehall
http://sourceforge.net/projects/macnative
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