Today's Eruptions

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Geyser2021-10-19
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Values for Old Faithful Area2021-10-192021-10-20
Civil Twilight Begin07:1407:16
Sunrise07:4407:45
Sunset18:3218:30
Civil Twilight End19:0118:59
Moon Illumination98.13%99.86%
Last Known Eruption
Old Faithful

147d 11h 22m ago

Grand

121d 2h 28m ago

Castle

2y 173d 18h 34m ago

Riverside

2y 174d 5h 9m ago

Daisy

180d 17h 32m ago

Great Fountain

2y 174d 4h 50m ago

Beehive

1y 181d 3h 20m ago

Steamboat

2y 177d 2h 19m ago