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Re: Julian Day Question [message #48876 is a reply to message #48875]

Fri, 26 May 2006 04:40

Greg Hennessy
Messages: 45
Registered: November 2005

Member

On 2006-05-26, David Fanning <davidf@dfanning.com> wrote:
> Clearly, I am missing something important here. :-(

A Julian day technically starts at noon.

A Modified Julian Day starts at midnight, and is defined by taking the
julian day and subtracting 2400000.5.

The difference between starting at noon and starting at midnight has
caused way more bugs that you might believe.

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[Message index]

		Re: Julian Day Question By: David Fanning on Tue, 30 May 2006 16:02
		Re: Julian Day Question By: Mark Hadfield on Tue, 30 May 2006 15:46
		Re: Julian Day Question By: Mark Hadfield on Tue, 30 May 2006 15:42
		Re: Julian Day Question By: David Fanning on Fri, 26 May 2006 12:31
		Re: Julian Day Question By: K. Bowman on Fri, 26 May 2006 11:30
		Re: Julian Day Question By: Paul Van Delst[1] on Fri, 26 May 2006 10:09
		Re: Julian Day Question By: news.qwest.net on Fri, 26 May 2006 10:05
		Re: Julian Day Question By: news.verizon.net on Fri, 26 May 2006 09:57
		Re: Julian Day Question By: news.qwest.net on Fri, 26 May 2006 09:53
		Re: Julian Day Question By: Paul Van Delst[1] on Fri, 26 May 2006 09:43
		Re: Julian Day Question By: James Kuyper on Fri, 26 May 2006 09:20
		Re: Julian Day Question By: Paul Van Delst[1] on Fri, 26 May 2006 07:20
		Re: Julian Day Question By: David Fanning on Fri, 26 May 2006 07:17
		Re: Julian Day Question By: Mike Wallace on Fri, 26 May 2006 07:05
		Re: Julian Day Question By: Greg Hennessy on Fri, 26 May 2006 04:40
		Re: Julian Day Question By: David Fanning on Thu, 25 May 2006 23:48
		Re: Julian Day Question By: David Fanning on Thu, 25 May 2006 23:28
		Re: Julian Day Question By: David Fanning on Thu, 25 May 2006 23:21
		Re: Julian Day Question By: Craig Markwardt on Thu, 25 May 2006 22:52
		Re: Julian Day Question By: David Fanning on Thu, 25 May 2006 23:13
		Re: Julian Day Question By: David Fanning on Thu, 25 May 2006 23:03
		Re: Julian Day Question By: Mike Wallace on Thu, 25 May 2006 22:27
		Re: Julian Day Question By: Paul Van Delst[1] on Fri, 02 June 2006 10:03

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