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Geyser1974-09-01
Bear Den1652
Congress Pool 1800
Constant1553, 1649
Echinus0936, 1047, 1152, 1257, 1405, 1511, 1616, 1724
Values for Old Faithful Area1974-09-01
Astronomical Twilight Begin05:01
Nautical Twilight Begin05:39
Civil Twilight Begin06:15
Sunrise06:45
Sunset20:00
Civil Twilight End20:30
Nautical Twilight End21:06
Astronomical Twilight End21:44
Moon Illumination99.71%

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