Today's Eruptions

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Geyser2025-07-08
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Values for Old Faithful Area2025-07-082025-07-09
Civil Twilight Begin05:1105:12
Sunrise05:4705:48
Sunset21:0921:08
Civil Twilight End21:4521:44
Moon Illumination93.17%97.3%
Last Known Eruption
Old Faithful

305d 11h 13m ago

Grand

1y 343d 14h 32m ago

Castle

3y 3h 19m ago

Riverside

3y 5h 16m ago

Daisy

3y 5h 16m ago

Great Fountain

3y 10h 22m ago

Beehive

1y 8d 14h 41m ago

Steamboat

3y 18d 11h 44m ago