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Geyser1973-04-18
Echinus1240, 1328, 1417, 1506, 1555,  1600
Ledge1910 A
Valentine1730 A
Values for Old Faithful Area1973-04-18
Astronomical Twilight Begin03:45
Nautical Twilight Begin04:25
Civil Twilight Begin05:03
Sunrise05:33
Sunset19:11
Civil Twilight End19:42
Nautical Twilight End20:19
Astronomical Twilight End20:59
Moon Illumination99.5%

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