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Geyser1974-07-30
Constant1026, 1445, 1618
Echinus0902, 1029, 1157, 1305, 1429, 1550
Ledge1551
Little Whirligig0946, 0948,  1800, 1952
Valentine0830, 1528
Whirligig0858, 0935, 1001, 1038, 1113, 1506, 1547,  1800
Values for Old Faithful Area1974-07-30
Astronomical Twilight Begin04:03
Nautical Twilight Begin04:52
Civil Twilight Begin05:34
Sunrise06:07
Sunset20:51
Civil Twilight End21:24
Nautical Twilight End22:07
Astronomical Twilight End22:56
Moon Illumination86.65%

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