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Geyser1979-08-17
Bear Den0945
Blue Mud Steam Vent 1200
Crater Spring 1200
Echinus1424, 1550
Fearless 1200
Gray Lakes 1200
Green Dragon Spring 1200
Little Whirligig0955
Monarch 1200
Mud Spring 1200
Mystic Spring 1200
Pearl 1200
Porkchop0932 ie,  1200, 1544 ie
Steamboat 1200
Tantalus 1200
Veteran0912
Yellow Funnel Spring 1200
Values for Old Faithful Area1979-08-17
Astronomical Twilight Begin04:36
Nautical Twilight Begin05:18
Civil Twilight Begin05:56
Sunrise06:28
Sunset20:26
Civil Twilight End20:57
Nautical Twilight End21:36
Astronomical Twilight End22:18
Moon Illumination25.63%

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