Today's Eruptions

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Geyser2025-07-14
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Values for Old Faithful Area2025-07-142025-07-15
Civil Twilight Begin05:1705:18
Sunrise05:5205:53
Sunset21:0621:05
Civil Twilight End21:4121:40
Moon Illumination87.48%79.3%
Last Known Eruption
Old Faithful

311d 22h 53m ago

Grand

1y 350d 2h 12m ago

Castle

3y 6d 14h 59m ago

Riverside

3y 6d 16h 56m ago

Daisy

3y 6d 16h 56m ago

Great Fountain

3y 6d 22h 2m ago

Beehive

1y 15d 2h 21m ago

Steamboat

3y 24d 23h 24m ago