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Geyser1977-07-21
Bear Den1540, 1805
Echinus1417, 1503
Little Whirligig1200, 1425, 1648
Values for Old Faithful Area1977-07-21
Astronomical Twilight Begin03:46
Nautical Twilight Begin04:39
Civil Twilight Begin05:24
Sunrise05:58
Sunset21:00
Civil Twilight End21:35
Nautical Twilight End22:19
Astronomical Twilight End23:12
Moon Illumination23.29%

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