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
28Jan2026 20:36:50 PST	moon	167.4	79.9	360	0.82	129.7	-37.2
28Jan2026 20:36:50 PST	jupiter	107.9	57.2	642185	1.00	158.4	-37.2
28Jan2026 20:36:50 PST	saturn	259.1	9.4	1516579	1.00	49.1	-37.2
    

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


% sl_smrs 37.8 -122.4
28Jan2026:
Sunrise:  07:17 PST (112.5°)
Sunset:   17:29 PST (247.7°)
Moonrise: 12:52 PST (54.2°)
Moonset:  03:35 PST (304.8°)
    

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


% sl_data -start 28Jan2026 -duration 7d -interval 5m -planets -refraction 37.8 -122.4 | sl_conjunctions
venus (full) and mercury (full)
  start at 30Jan2026 17:55 PST  b: 248.1° e: 0.5°  1.08° apart
  minsep at 30Jan2026 17:55 PST  b: 248.1° e: 0.5°  1.08° apart
  end at 30Jan2026 17:55 PST  b: 248.1° e: 0.5°  1.08° apart
venus (full) and mercury (full)
  start at 01Feb2026 18:00 PST  b: 249.1° e: 0.9°  1.86° apart
  minsep at 01Feb2026 18:00 PST  b: 249.1° e: 0.9°  1.86° apart
  end at 01Feb2026 18:00 PST  b: 249.1° e: 0.9°  1.86° apart
venus (full) and mercury (full)
  start at 02Feb2026 18:00 PST  b: 249.1° e: 1.6°  2.20° apart
  minsep at 02Feb2026 18:00 PST  b: 249.1° e: 1.6°  2.20° apart
  end at 02Feb2026 18:00 PST  b: 249.1° e: 1.6°  2.20° apart
venus (full) and mercury (full)
  start at 03Feb2026 18:05 PST  b: 250.0° e: 1.3°  2.68° apart
  minsep at 03Feb2026 18:05 PST  b: 250.0° e: 1.3°  2.68° apart
  end at 03Feb2026 18:05 PST  b: 250.0° e: 1.3°  2.68° apart
    

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