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    Re: An All-Haversine Azimuth (from Lat, Dec and dLon alone)?
    From: Frederick Curtis
    Date: 2021 Feb 19, 08:58 -0800

    To obtain azimuth without Hc calculations there are 'good old' methods; such as Lecky's A,B,C tables originally published in 1892 and republished every year by Reed's and for the sun H.O. 260 (also called H.O. 71 at times, I have copies with both titles and haven't noticed a difference) which is great because you do NOT NEED declination or LHA as long as you know date and local time. 

       
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