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In eruption since 2011

Today's Eruptions

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Values for Old Faithful Area2019-12-072019-12-08
Civil Twilight Begin07:1207:13
Civil Twilight End17:1617:16
Moon Illumination76.92%84.53%
Last Known Eruption
Old Faithful

195d 6h 46m ago


50d 8h 51m ago


222d 5h 24m ago


222d 15h 59m ago


185d 6h 9m ago

Great Fountain

222d 15h 40m ago


222d 20h 58m ago


225d 13h 9m ago

All data is shown in US/Mountain timezone unless specified otherwise.

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