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In eruption since 2011

Today's Eruptions

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Values for Old Faithful Area2019-09-232019-09-24
Civil Twilight Begin06:4206:43
Civil Twilight End19:4819:46
Moon Illumination37.71%27.16%
Last Known Eruption
Old Faithful

119d 22h 34m ago


146d 21h 58m ago


146d 21h 12m ago


147d 7h 47m ago


109d 21h 57m ago

Great Fountain

147d 7h 28m ago


147d 12h 46m ago


150d 4h 57m ago

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