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Hours of astronomical darkness
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26-10-2014, 09:06 PM
RickS
(Rick)
PI cult recruiter
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Quote:
Originally Posted by
cometcatcher
How many degrees below the horizon does the Sun have to be for astro dark? 18 degrees?
No idea. I have a program that tells me
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