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    Re: Solstice
    From: David C
    Date: 2021 Jun 20, 21:13 -0700

    Franks you have raised a subject that I find confusing. I calculated  gha sun - gha aries for the time you specified. The answer was 90° (give or take a few tenths of minute of arc beeause I did not pay attention to interpolation). Is this the SHA sun - your figure was 270?.

    Many of my navigation text books have lengthy chapters on time which I find confusing. The texts are mostly based on the RA and R, E almanacs rather than the GHA version used from the 1940s.

    Can you please  give an explanation of SHA sun and the solstice based on the GHA almanac.

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