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Geyser1991-05-17
Whistle 1991-05-12 0000-1991-05-24 0000
Values for Old Faithful Area1991-05-17
Astronomical Twilight Begin03:45
Nautical Twilight Begin04:36
Civil Twilight Begin05:19
Sunrise05:53
Sunset20:45
Civil Twilight End21:19
Nautical Twilight End22:02
Astronomical Twilight End22:53
Moon Illumination13.23%

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