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
29Dec2025 20:53:11 PST	moon	215.7	67.4	360	0.76	121.0	-45.3
29Dec2025 20:53:11 PST	jupiter	87.1	33.8	635275	1.00	167.2	-45.3
29Dec2025 20:53:11 PST	saturn	241.9	26.1	1451096	1.00	77.3	-45.3
    

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


% sl_smrs 37.8 -122.4
29Dec2025:
Sunrise:  07:25 PST (119.2°)
Sunset:   16:59 PST (240.8°)
Moonrise: 12:47 PST (68.2°)
Moonset:  02:04 PST (288.3°)
    

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