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
11Mar2026 08:13:28 PDT	sun	101.2	8.4	148617	1.00	0.0	8.4
11Mar2026 08:13:28 PDT	moon	191.9	22.0	401	0.48	87.6	8.4
11Mar2026 08:13:28 PDT	mercury	107.2	15.0	92654	0.04	8.8	8.4
11Mar2026 08:13:28 PDT	venus	88.1	0.6	244150	0.97	15.2	8.4
11Mar2026 08:13:28 PDT	mars	114.4	13.6	348016	0.99	14.0	8.4
11Mar2026 08:13:28 PDT	saturn	91.6	1.4	1567298	1.00	11.8	8.4
    

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


% sl_smrs 37.8 -122.4
11Mar2026:
Sunrise:  07:27 PDT (94.0°)
Sunset:   19:13 PDT (266.4°)
Moonrise: 02:52 PDT (127.0°)
Moonset:  11:51 PDT (232.9°)
    

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


% sl_data -start 11Mar2026 -duration 7d -interval 5m -planets -refraction 37.8 -122.4 | sl_conjunctions
mercury (crescent) and moon (crescent)
  start at 17Mar2026 06:40 PDT  b: 100.8° e: 1.6°  2.62° apart
  minsep at 17Mar2026 06:40 PDT  b: 100.8° e: 1.6°  2.62° apart
  end at 17Mar2026 06:55 PDT  b: 103.1° e: 4.2°  2.62° apart
    

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