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In eruption since 2011

Today's Eruptions

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Values for Old Faithful Area2020-01-192020-01-20
Civil Twilight Begin07:2107:21
Civil Twilight End17:4617:47
Moon Illumination31.09%21.48%
Last Known Eruption
Old Faithful

238d 15h 1m ago


93d 17h 6m ago


265d 13h 39m ago


266d 14m ago


228d 14h 24m ago

Great Fountain

265d 23h 55m ago


266d 5h 13m ago


268d 21h 24m ago

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