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Geyser1977-08-25
Constant1045, 1205
Echinus1439
Fearless 0840
Little Whirligig1135
Monarch 0840
Palpitator Spring 0840,  0840
Whirligig1035, 1145
Values for Old Faithful Area1977-08-25
Astronomical Twilight Begin04:50
Nautical Twilight Begin05:30
Civil Twilight Begin06:07
Sunrise06:38
Sunset20:12
Civil Twilight End20:42
Nautical Twilight End21:20
Astronomical Twilight End21:59
Moon Illumination83.87%

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