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Geyser1974-08-21
Cistern Spring 1200
Constant0942
Echinus0818, 0920, 1022, 1140, 1255, 1400, 1613
Values for Old Faithful Area1974-08-21
Astronomical Twilight Begin04:43
Nautical Twilight Begin05:24
Civil Twilight Begin06:02
Sunrise06:33
Sunset20:19
Civil Twilight End20:50
Nautical Twilight End21:28
Astronomical Twilight End22:09
Moon Illumination16.51%

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