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
11Sep2024 19:13:40 PDT	sun	274.4	1.4	150560	1.00	0.0	1.4
11Sep2024 19:13:40 PDT	moon	173.2	22.3	384	0.59	99.8	1.4
11Sep2024 19:13:40 PDT	venus	250.8	14.0	219012	0.89	26.5	1.4
    

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


% sl_smrs 37.8 -122.4
11Sep2024:
Sunrise:  06:49 PDT (84.1°)
Sunset:   19:22 PDT (275.7°)
Moonrise: 15:14 PDT (127.4°)
Moonset:  none
    

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


% sl_data -start 11Sep2024 -duration 7d -interval 5m -planets -refraction 37.8 -122.4 | sl_conjunctions
saturn (full) and moon (full) (OCCULTATION)
  start at 16Sep2024 23:15 PDT  b: 155.8° e: 40.5°  2.66° apart
  minsep at 17Sep2024 04:35 PDT  b: 245.1° e: 17.3°  0.10° apart
  end at 17Sep2024 06:05 PDT  b: 259.8° e: 1.3°  0.80° apart
antisun and moon (full) (partial lunar eclipse)
  start at 17Sep2024 19:20 PDT  b: 94.2° e: 1.4°  1.08° apart
  minsep at 17Sep2024 19:20 PDT  b: 94.2° e: 1.4°  1.08° apart
  end at 17Sep2024 19:25 PDT  b: 94.9° e: 2.2°  1.25° apart
    

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