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
17Oct2025 19:48:21 PDT	saturn	119.1	27.0	1297057	1.00	151.4	-16.5
    

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


% sl_smrs 37.8 -122.4
17Oct2025:
Sunrise:  07:21 PDT (101.5°)
Sunset:   18:28 PDT (258.3°)
Moonrise: 03:40 PDT (78.6°)
Moonset:  16:47 PDT (277.3°)
    

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


% sl_data -start 17Oct2025 -duration 7d -interval 5m -planets -refraction 37.8 -122.4 | sl_conjunctions
mars (full) and mercury (gibbous)
  start at 17Oct2025 18:55 PDT  b: 242.9° e: 4.8°  2.12° apart
  minsep at 17Oct2025 19:10 PDT  b: 245.3° e: 2.3°  2.01° apart
  end at 17Oct2025 19:15 PDT  b: 246.1° e: 1.5°  2.01° apart
mars (full) and mercury (gibbous)
  start at 18Oct2025 18:50 PDT  b: 241.8° e: 5.5°  1.92° apart
  minsep at 18Oct2025 19:10 PDT  b: 245.1° e: 2.1°  1.84° apart
  end at 18Oct2025 19:15 PDT  b: 245.8° e: 1.3°  1.84° apart
mars (full) and mercury (gibbous)
  start at 19Oct2025 18:50 PDT  b: 241.6° e: 5.2°  1.83° apart
  minsep at 19Oct2025 19:05 PDT  b: 244.1° e: 2.8°  1.75° apart
  end at 19Oct2025 19:15 PDT  b: 245.6° e: 1.1°  1.89° apart
mars (full) and mercury (gibbous)
  start at 20Oct2025 18:50 PDT  b: 241.4° e: 5.0°  1.98° apart
  minsep at 20Oct2025 18:50 PDT  b: 241.4° e: 5.0°  1.98° apart
  end at 20Oct2025 19:15 PDT  b: 245.3° e: 1.0°  1.98° apart
mars (full) and mercury (gibbous)
  start at 21Oct2025 18:50 PDT  b: 241.1° e: 4.8°  2.24° apart
  minsep at 21Oct2025 19:10 PDT  b: 244.3° e: 1.6°  2.24° apart
  end at 21Oct2025 19:15 PDT  b: 245.1° e: 0.8°  2.28° apart
mars (full) and mercury (gibbous)
  start at 22Oct2025 18:45 PDT  b: 240.2° e: 5.5°  2.65° apart
  minsep at 22Oct2025 19:10 PDT  b: 244.1° e: 1.4°  2.62° apart
  end at 22Oct2025 19:15 PDT  b: 244.8° e: 0.6°  2.66° apart
    

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