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Geyser1973-09-20
Blue 1100
Congress Pool 1800
Echinus1010 A, 1155, 1248, 1437, 1531, 1626
Ledge 1800
Little Whirligig 1100, 1804
Orby 0930
Whirligig 1800,  1800
Values for Old Faithful Area1973-09-20
Astronomical Twilight Begin05:29
Nautical Twilight Begin06:05
Civil Twilight Begin06:39
Sunrise07:08
Sunset19:25
Civil Twilight End19:53
Nautical Twilight End20:28
Astronomical Twilight End21:03
Moon Illumination43.5%

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