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Geyser1971-07-20
Artemisia0815
Bear Den0825, 1800
Beehive 0730, 0955, 1825
Castle1100, 1950
Cliff1300 ie
Echinus1049, 1133, 1212, 1525, 1615, 1717
Fan and Mortar1700
Grand1020, 1750 ie
Great Fountain1230
Ledge2100 A
Old Faithful0807 short, 0905 long, 1012 short, 1123 short, 1211 long, 1329 short, 1418 long, 1538 short, 1625 long, 1738 short, 1835 long, 1952 short, 2043 long
Riverside0533, 1130
Values for Old Faithful Area1971-07-20
Astronomical Twilight Begin03:43
Nautical Twilight Begin04:37
Civil Twilight Begin05:22
Sunrise05:57
Sunset21:02
Civil Twilight End21:36
Nautical Twilight End22:21
Astronomical Twilight End23:15
Moon Illumination5.05%

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