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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: When did the Atumnal Equinox occure this year?
From: David Pike
Date: 2019 Sep 25, 15:32 -0700
From: David Pike
Date: 2019 Sep 25, 15:32 -0700
Frank you said: Though this tool does not directly display the Sun's SHA, you can easily calculate it: SHA* = GHA* - GHAaries.
Arn't the Sun's four SHAs going to be 360, 270, 180, and 090 automatically because of the definition of the First Point of Aries, i.e. where the ecliptic crosses the celestial equator from south to north, or should I be allowing for other effects such as mean v sidereal time. DaveD
