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Geyser1981-08-30
Bear Den1958
Blue Mud Steam Vent 1200
Branch Spring 1200
Echinus1028, 1244 A, 1328:49, 1418:26, 1550
Graceful1500
Little Whirligig1350 ie, 1602
Morning0051, 0630
Whirligig2040
Values for Old Faithful Area1981-08-30
Astronomical Twilight Begin04:59
Nautical Twilight Begin05:37
Civil Twilight Begin06:13
Sunrise06:43
Sunset20:03
Civil Twilight End20:33
Nautical Twilight End21:10
Astronomical Twilight End21:48
Moon Illumination0.47%

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