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Geyser1978-08-13
Blue Mud Steam Vent 1200
Echinus0918, 1039
Values for Old Faithful Area1978-08-13
Astronomical Twilight Begin04:29
Nautical Twilight Begin05:12
Civil Twilight Begin05:52
Sunrise06:23
Sunset20:32
Civil Twilight End21:04
Nautical Twilight End21:43
Astronomical Twilight End22:26
Moon Illumination65.65%

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