sightliner - find sight lines for the sun and moon

Not quite released yet.

Here are the current positions of the celestial objects, above the horizon as seen from San Francisco:


% sl_data -planets -num 1 -refraction 37.8 -122.4 | sl_find 'elev>0'
# datetime		object	bearing	elev	dist	full	sunsep	sunelev
20Aug2025 03:05:35 PDT	jupiter	60.9	0.4	878072	1.00	42.5	-33.4
20Aug2025 03:05:35 PDT	saturn	174.3	50.1	1303608	1.00	146.9	-33.4
    

Here are today's sun/moon rise/set times and bearings for San Francisco:


% sl_smrs 37.8 -122.4
20Aug2025:
Sunrise:  06:30 PDT (73.8°)
Sunset:   19:55 PDT (285.9°)
Moonrise: 03:28 PDT (56.8°)
Moonset:  18:47 PDT (300.2°)
    

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