Today's Eruptions

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Geyser2025-07-18
No reports yet
Values for Old Faithful Area2025-07-182025-07-19
Civil Twilight Begin05:2105:22
Sunrise05:5605:57
Sunset21:0221:02
Civil Twilight End21:3721:36
Moon Illumination47.37%36.03%
Last Known Eruption
Old Faithful

316d 44m ago

Grand

1y 354d 4h 3m ago

Castle

3y 10d 16h 50m ago

Riverside

3y 10d 18h 47m ago

Daisy

3y 10d 18h 47m ago

Great Fountain

3y 10d 23h 53m ago

Beehive

1y 19d 4h 12m ago

Steamboat

3y 29d 1h 15m ago