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Geyser1980-09-20
Blue Mud Steam Vent 1200
Branch Spring 1200
Echinus0900 min
Rubble 1800
Values for Old Faithful Area1980-09-20
Astronomical Twilight Begin05:30
Nautical Twilight Begin06:05
Civil Twilight Begin06:39
Sunrise07:08
Sunset19:24
Civil Twilight End19:53
Nautical Twilight End20:27
Astronomical Twilight End21:02
Moon Illumination76.68%

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