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Geyser1980-09-16
Arsenic1104 ie
Bear Den1013, 1503
Blue 1200
Blue Mud Steam Vent 1200
Cistern Spring 1206
Echinus0922 min, 0930 min, 0935:31, 1201:01 min
Emerald Spring 1200
Gray Lakes 1200
Green Dragon Spring 1200
Incline 1200
Palpitator Spring 1840
Porkchop1815 ie
Steamboat 1200
Values for Old Faithful Area1980-09-16
Astronomical Twilight Begin05:24
Nautical Twilight Begin06:00
Civil Twilight Begin06:34
Sunrise07:03
Sunset19:31
Civil Twilight End20:01
Nautical Twilight End20:35
Astronomical Twilight End21:11
Moon Illumination37%

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