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Geyser1991-05-21
Whistle 1991-05-12 0000-1991-05-24 0000
Values for Old Faithful Area1991-05-21
Astronomical Twilight Begin03:38
Nautical Twilight Begin04:31
Civil Twilight Begin05:15
Sunrise05:49
Sunset20:49
Civil Twilight End21:24
Nautical Twilight End22:08
Astronomical Twilight End23:01
Moon Illumination54.78%

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