Here's how to watch the longest partial lunar eclipse of the century live or online

The nearly total lunar eclipse will last nearly 3.5 hours.

A girl with a telescope watches a lunar eclipse.
A girl with a telescope watches a lunar eclipse.
(Image credit: m-gucci via Getty Images)

Earth's dark shadow will cover nearly all of the moon early Friday morning (Nov. 19), tinting the moon a rusty red in what will be the longest partial lunar eclipse of the century. So, what's the best way to watch this nearly 3.5-hour long celestial show?

If you live in a prime viewing spot, which includes all 50 U.S. states, set your alarm clock for 2:19 a.m. EST (7:19 GMT) if you want to see the beginning of the partial eclipse, and for just after 4 a.m. EST (9:00 GMT) to see Earth's shadow cover 97% of the moon, turning it an eerie red.

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ESTPSTGMTEventWhat's happening
2:19 a.m.11:19 p.m. (Nov. 18)7:19 a.m.Partial eclipse beginsMoon enters Earth's umbra. It will look as if the moon has a bite taken out of it.
3:45 a.m.12:45 a.m. (Nov. 19)8:45 a.m.Moon turns redUpward of 95% of the moon is in the umbra, making it appear red.
4:03 a.m.1:03 a.m.9:03 a.m.Eclipse peakThis is the best time to see the red moon.
4:20 a.m.1:20 a.m.9:20 a.m.Goodbye red moonThe red color fades as less than 95% of the moon is in the Earth's umbra. It will look as if a bite was taken out of the opposite side of the moon from before.
5:47 a.m.2:47 a.m.10:47 a.m.Partial eclipse endsThe moon exits the umbra.
Laura Geggel
Managing Editor

Laura is the managing editor at Live Science. She also runs the archaeology section and the Life's Little Mysteries series. Her work has appeared in The New York Times, Scholastic, Popular Science and Spectrum, a site on autism research. She has won multiple awards from the Society of Professional Journalists and the Washington Newspaper Publishers Association for her reporting at a weekly newspaper near Seattle. Laura holds a bachelor's degree in English literature and psychology from Washington University in St. Louis and a master's degree in science writing from NYU.