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Geyser1971-09-30
Grand1139 ie
Old Faithful0840 long, 0954 long, 1104 short, 1145 long, 1303 short, 1345 long, 1503 short, 1556 long
Values for Old Faithful Area1971-09-30
Astronomical Twilight Begin05:42
Nautical Twilight Begin06:16
Civil Twilight Begin06:50
Sunrise07:19
Sunset19:07
Civil Twilight End19:36
Nautical Twilight End20:09
Astronomical Twilight End20:44
Moon Illumination75.96%

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