Today's Eruptions

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Geyser2021-09-22
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Values for Old Faithful Area2021-09-222021-09-23
Civil Twilight Begin06:4206:43
Sunrise07:1107:12
Sunset19:2019:18
Civil Twilight End19:4919:47
Moon Illumination98.37%94.89%
Last Known Eruption
Old Faithful

5h 21m ago

Grand

7h 1m ago

Castle

11h 35m ago

Riverside

6h 0m ago

Daisy

5h 41m ago

Beehive

13h 58m ago

Steamboat

10d 20h 49m ago