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In eruption since 2011

Today's Eruptions

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Values for Old Faithful Area2020-04-082020-04-09
Civil Twilight Begin06:2006:18
Civil Twilight End20:2920:30
Moon Illumination99.97%98.02%
Last Known Eruption
Old Faithful

42d 3h 28m ago


172d 22h 45m ago


344d 19h 18m ago


345d 5h 53m ago


307d 20h 3m ago

Great Fountain

345d 5h 34m ago


345d 10h 52m ago


348d 3h 3m ago

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