Today's Eruptions

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Geyser2025-04-24
Lion0501 wc
Riverside0549 wc
Values for Old Faithful Area2025-04-242025-04-25
Civil Twilight Begin05:5205:50
Sunrise06:2306:21
Sunset20:1920:20
Civil Twilight End20:5020:51
Moon Illumination17.73%9.65%
Last Known Eruption
Old Faithful

10h 5m ago

Grand

11h 8m ago

Castle

21h 24m ago

Riverside

6m ago

Daisy

9h 4m ago

Great Fountain

11h 7m ago

Beehive

11h 32m ago

Steamboat

9d 18h 50m ago