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
13Oct2025 21:46:40 PDT	saturn	144.1	42.2	1292771	1.00	155.5	-38.2
    

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


% sl_smrs 37.8 -122.4
13Oct2025:
Sunrise:  07:17 PDT (99.6°)
Sunset:   18:34 PDT (260.2°)
Moonrise: none
Moonset:  14:47 PDT (303.2°)
    

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


% sl_data -start 13Oct2025 -duration 7d -interval 5m -planets -refraction 37.8 -122.4 | sl_conjunctions
mars (full) and mercury (gibbous)
  start at 16Oct2025 18:55 PDT  b: 243.2° e: 5.0°  2.56° apart
  minsep at 16Oct2025 19:10 PDT  b: 245.6° e: 2.5°  2.43° apart
  end at 16Oct2025 19:15 PDT  b: 246.4° e: 1.6°  2.44° apart
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
    

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