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Geyser1991-05-15
Echinus1536, 1627
Whistle 1991-05-12 0000-1991-05-24 0000
Values for Old Faithful Area1991-05-15
Astronomical Twilight Begin03:49
Nautical Twilight Begin04:39
Civil Twilight Begin05:22
Sunrise05:55
Sunset20:43
Civil Twilight End21:17
Nautical Twilight End21:59
Astronomical Twilight End22:49
Moon Illumination1.63%

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