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
11Jul2025 17:41:09 PDT	sun	274.6	31.4	152069	1.00	0.0	31.4
11Jul2025 17:41:09 PDT	mercury	250.0	46.5	107463	0.28	24.2	31.4
11Jul2025 17:41:09 PDT	mars	202.9	57.3	298987	0.93	54.3	31.4
11Jul2025 17:41:09 PDT	jupiter	283.3	21.4	917745	1.00	12.7	31.4
    

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


% sl_smrs 37.8 -122.4
11Jul2025:
Sunrise:  05:58 PDT (61.0°)
Sunset:   20:32 PDT (298.8°)
Moonrise: 21:41 PDT (118.7°)
Moonset:  06:30 PDT (238.1°)
    

And here are the close celestial encounters for the next week:


% sl_data -start 11Jul2025 -duration 7d -interval 5m -planets -refraction 37.8 -122.4 | sl_conjunctions
saturn (full) and moon (gibbous)
  start at 15Jul2025 23:45 PDT  b: 90.9° e: 1.2°  2.33° apart
  minsep at 15Jul2025 23:50 PDT  b: 91.7° e: 2.1°  2.28° apart
  end at 16Jul2025 02:15 PDT  b: 115.6° e: 29.3°  2.89° apart
    

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