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Geyser1982-02-20
Blue Mud Steam Vent 1200
Branch Spring 1200
Values for Old Faithful Area1982-02-20
Astronomical Twilight Begin05:38
Nautical Twilight Begin06:12
Civil Twilight Begin06:45
Sunrise07:15
Sunset17:58
Civil Twilight End18:28
Nautical Twilight End19:02
Astronomical Twilight End19:35
Moon Illumination12.7%

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