Today's Eruptions

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Geyser2021-07-26
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Values for Old Faithful Area2021-07-262021-07-27
Civil Twilight Begin05:3005:31
Sunrise06:0406:05
Sunset20:5520:54
Civil Twilight End21:2921:28
Moon Illumination94.1%88%
Last Known Eruption
Old Faithful

63d 8h 55m ago

Grand

37d 2m ago

Castle

2y 89d 16h 7m ago

Riverside

2y 90d 2h 42m ago

Daisy

96d 15h 5m ago

Great Fountain

2y 90d 2h 23m ago

Beehive

1y 97d 54m ago

Steamboat

2y 92d 23h 52m ago