On 2024-07-20 7:01 a.m., John Goodman via sundial wrote:
My ultimate objective is to find the sun's hour angle on a given day, in a given location, when it reaches a selected azimuth.
John, here's my attempt. I've never used this result so my calculation needs checking.
Cheers, Steve /δ/is solar declination /φ /is latitude /ω/is hour angle /γ/is azimuth Solar position vector S is // so Rearrange: Above equation is of form: Using trig identities: where and in which case or or We have to watch out for quadrant in inverse functions.
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