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Arsenic 1800
Dark Cavern 1800
Echinus0900 ie, 1022, 1106, 1145, 1220, 1351, 1515, 1715
Fan-Norris 1800
Fireball 1800
Great Fountain0745, 1730
Old Faithful0745, 0838 long, 0957 short, 1100 long, 1204 long, 1311 long, 1419 long, 1540 short, 1625 long, 1753 short, 1837 long, 1950 short, 2035 long
Values for Old Faithful Area1970-08-12
Astronomical Twilight Begin04:27
Nautical Twilight Begin05:11
Civil Twilight Begin05:50
Civil Twilight End21:05
Nautical Twilight End21:45
Astronomical Twilight End22:29
Moon Illumination69.61%

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