Be sure not to miss tonight's supermoon eclipse by watching live footage here at TIME.com, beginning at 7:11 p.m. ET (00:11 GMT) and extending into Monday morning.
The supermoon eclipse results from the rare combination of a lunar eclipse, a point in the moon's orbit when it is closest to the earth, and the full moon closest to the fall equinox — all at once. In other words, this is a total eclipse of a super-harvest-blood-moon. It hasn't happened in 33 years, and it won't occur again for another 18.
The eclipse will be visible to the naked eye, and the different phases will altogether be over four hours long. The eclipse will take place in stages, with first the penumbral eclipse, when the earth blocks the moon with the outer part of its shadow, then the partial eclipse, and then the full eclipse, when the earth completely blocks the moon from the sun's light. The darkened moon may appear red during the period of total eclipse in the middle of the event.
If you cannot get to a spot with a moon view, or prefer not to spend almost five hours outside tonight, you can watch the full lunar event here via live stream. The stages of the the supermoon eclipse are at the following times:
Penumbral Eclipse begins — 00:11 GMT
Partial Eclipse begins — 01:07 GMT
Full Eclipse begins — 2:11 GMT
Maximum Eclipse — 2:47 GMT
Full Eclipse ends — 3:23 GMT
Partial Eclipse ends — 4:27 GMT
Penumbral Eclipse ends — 5:22 GMT