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Geyser1974-08-15
Arch Steam Vent0000,  1800
Bear Den0925
Congress Pool 1800
Constant1503
Echinus0913, 1113, 1210, 1310, 1404, 1520, 1625
Fan-Norris2021
Ledge 1800
Little Whirligig 1800
Orby 1800
Pinto1115 ie, 1934
Pinwheel 1800
Sunday1950
Valentine0830, 1910
Values for Old Faithful Area1974-08-15
Astronomical Twilight Begin04:32
Nautical Twilight Begin05:15
Civil Twilight Begin05:54
Sunrise06:26
Sunset20:29
Civil Twilight End21:00
Nautical Twilight End21:39
Astronomical Twilight End22:22
Moon Illumination9.56%

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