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In eruption since 2011

Today's Eruptions

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Values for Old Faithful Area2021-02-272021-02-28
Civil Twilight Begin06:3306:32
Civil Twilight End18:3818:39
Moon Illumination99.99%98.81%
Last Known Eruption
Old Faithful

1y 2d 10h 50m ago


1y 133d 6h 7m ago


1y 305d 2h 40m ago


1y 305d 13h 15m ago


1y 268d 3h 25m ago

Great Fountain

1y 305d 12h 56m ago


312d 11h 27m ago


1y 308d 10h 25m ago

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