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Geyser1991-08-20
Echinus0855, 1005, 1108, 1205, 1306, 1401, 1506, 1602, 1705
Morning0830, 1225, 1622, 2003, 2329 E
Values for Old Faithful Area1991-08-20
Astronomical Twilight Begin04:41
Nautical Twilight Begin05:22
Civil Twilight Begin06:00
Sunrise06:31
Sunset20:21
Civil Twilight End20:52
Nautical Twilight End21:30
Astronomical Twilight End22:11
Moon Illumination77.48%

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