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Re: shortest twilight problem...
From: Marcel Tschudin
Date: 2010 Jun 29, 16:36 +0300
From: Marcel Tschudin
Date: 2010 Jun 29, 16:36 +0300
Sorry, for some reason I confused SHORTEST and LONGEST twilight. The original question related to the shortest twilight. For some unknown reasons my reflections turned on to the longest twilight. It's the longest twilight that I wrongly estimated to be around the equinox whereas for the initial question, asking for the date of shortest twilight, my first answer, based on some wrong reasoning, happened to be roughly correct. In the calculation done before the first minimum is on 04 MAR 2010 and the second on 09/10 OCT 2010. Marcel
