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Geyser1999-05-21
Great Fountain0518 E, 1428 E
Values for Old Faithful Area1999-05-21
Astronomical Twilight Begin03:38
Nautical Twilight Begin04:31
Civil Twilight Begin05:15
Sunrise05:49
Sunset20:50
Civil Twilight End21:24
Nautical Twilight End22:08
Astronomical Twilight End23:01
Moon Illumination39.63%

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