Today's Eruptions

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Geyser2025-08-08
No reports yet
Values for Old Faithful Area2025-08-082025-08-09
Civil Twilight Begin05:4605:47
Sunrise06:1806:20
Sunset20:3820:37
Civil Twilight End21:1121:09
Moon Illumination98.6%99.99%
Last Known Eruption
Old Faithful

336d 15h 22m ago

Grand

2y 9d 18h 41m ago

Castle

3y 31d 7h 28m ago

Riverside

3y 31d 9h 25m ago

Daisy

3y 31d 9h 25m ago

Great Fountain

3y 31d 14h 31m ago

Beehive

1y 39d 18h 50m ago

Steamboat

3y 49d 15h 53m ago