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Geyser1983-05-21
Basin 1200
Bear Den0951
Blue 1200
Colloidal Pool 1000
Crater Spring 1200
Dishwater Spring 1200
Echinus 1200
Emerald Spring 1200
Giantess2346
Graceful1008 ie, 1026
Green Dragon Spring 1200
Mud Spring 1200
Mystic Spring 1200
Puff-n-Stuff 1200
Steamboat 1200
Sunday 1200
UNNG-NBK-8 1200
Whirligig1004 ie, 1050, 1152
Yellow Funnel Spring 1200
Values for Old Faithful Area1983-05-21
Astronomical Twilight Begin03:38
Nautical Twilight Begin04:31
Civil Twilight Begin05:15
Sunrise05:49
Sunset20:49
Civil Twilight End21:24
Nautical Twilight End22:08
Astronomical Twilight End23:01
Moon Illumination68.4%

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