> [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] wrote:
> <snip>
> ...as the time of sunset varies by as much as 6 hours from
> solstice to solstice (here in Michigan).
> <end snip>
>
> Hmmm... can someone help me out? A quick check of my astrolabe,
> with a plate for St. Paul, MN, gives sunset at about 1618hrs for
> the winter solstice, and about 1943 for summer - about a 3 1/2 hr
> variance. Am I missing something?
>
> Mike Blackwell
For Detroit (assuimg EST is the time zone) xephem computes
Limb 6/21/1999 4:55:05 EST:
RiseTm SetTm HrsUp
Sun 4:55 20:13 15:18
Limb 12/21/1999 4:55:05 EST:
RiseTm SetTm HrsUp
Sun 7:57 17:03 9:06
which agrees with your astrolabe computations. My guess is he was
thinking of a six hour daylight delta.
Jim
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| Jim Cobb | 540 Arapeen Dr. #100 | [EMAIL PROTECTED] |
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Your emotions are often a reverse indicator of what you ought to be
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