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Geyser1977-08-18
Cistern Spring 1200
Echinus1042, 1545 ie
Little Whirligig0955
Other Geyser1345
Valentine1415
Values for Old Faithful Area1977-08-18
Astronomical Twilight Begin04:38
Nautical Twilight Begin05:20
Civil Twilight Begin05:58
Sunrise06:29
Sunset20:24
Civil Twilight End20:55
Nautical Twilight End21:33
Astronomical Twilight End22:15
Moon Illumination12.35%

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