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Geyser1981-07-19
Arsenic1103
Dark Cavern1446
Echinus1100, 1255, 1335, 1428, 1449, 1548
Giantess1057
Valentine1058 ie, 1925 A
Veteran1128
Whirligig1124, 1244, 1831
Values for Old Faithful Area1981-07-19
Astronomical Twilight Begin03:43
Nautical Twilight Begin04:37
Civil Twilight Begin05:21
Sunrise05:56
Sunset21:02
Civil Twilight End21:37
Nautical Twilight End22:22
Astronomical Twilight End23:15
Moon Illumination95.47%

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