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Geyser1977-08-31
Hurricane Vent 1800
Little Whirligig1425
Sunday 1800
Whirligig1440, 1535
Values for Old Faithful Area1977-08-31
Astronomical Twilight Begin05:00
Nautical Twilight Begin05:38
Civil Twilight Begin06:15
Sunrise06:45
Sunset20:01
Civil Twilight End20:31
Nautical Twilight End21:08
Astronomical Twilight End21:46
Moon Illumination93.4%

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