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
16Aug2026 06:26:05 PDT	mercury	74.8	10.4	183322	0.88	11.1	-0.3
16Aug2026 06:26:05 PDT	mars	93.7	45.6	288478	0.93	49.8	-0.3
16Aug2026 06:26:05 PDT	jupiter	76.1	11.8	938096	1.00	12.9	-0.3
16Aug2026 06:26:05 PDT	saturn	225.7	46.0	1313442	1.00	128.9	-0.3
    

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


% sl_smrs 37.8 -122.4
16Aug2026:
Sunrise:  06:27 PDT (72.1°)
Sunset:   20:01 PDT (287.8°)
Moonrise: 10:49 PDT (102.0°)
Moonset:  22:00 PDT (254.5°)
    

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


% sl_data -start 16Aug2026 -duration 7d -interval 5m -planets -refraction 37.8 -122.4 | sl_conjunctions
jupiter (full) and mercury (gibbous)
  start at 16Aug2026 05:30 PDT  b: 67.2° e: 1.1°  1.84° apart
  minsep at 16Aug2026 05:40 PDT  b: 68.8° e: 2.8°  1.77° apart
  end at 16Aug2026 06:00 PDT  b: 71.7° e: 6.3°  1.97° apart
    

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