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Geyser1981-07-23
Arsenic1027, 2121
Bear Den2100
Dog's Leg Spring1623
Echinus0935
Moxie1032, 1036, 1040, 1044
Whirligig1029, 2123
Values for Old Faithful Area1981-07-23
Astronomical Twilight Begin03:50
Nautical Twilight Begin04:42
Civil Twilight Begin05:26
Sunrise06:00
Sunset20:58
Civil Twilight End21:33
Nautical Twilight End22:16
Astronomical Twilight End23:09
Moon Illumination63%

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