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Geyser1977-08-20
Blue Mud Steam Vent 1200
Constant1045, 1107, 1137, 1200
Echinus0850 ie, 0940 A, 1025, 1441, 1622
Little Whirligig1332
Splutter Pot0818, 1046, 1110, 1115, 1124
UNNG-NBK-8 1200
Veteran 0845
Whirligig0818, 1047, 1145, 1344
Values for Old Faithful Area1977-08-20
Astronomical Twilight Begin04:42
Nautical Twilight Begin05:23
Civil Twilight Begin06:01
Sunrise06:32
Sunset20:20
Civil Twilight End20:51
Nautical Twilight End21:29
Astronomical Twilight End22:10
Moon Illumination30.27%

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