Close to-total lunar eclipse tonight will likely be longest since 1440: How one can watch

Longest partial lunar eclipse this century is almost here: How to watch

NASA caught sight of a supermoon lunar eclipse on Sept. 27, 2015. The November 2021 partial eclipse will not be fairly this eye-popping, however it would nonetheless be lovely.

NASA/Rami Daud

It is lunar eclipse time. Tonight via Friday morning (relying on location), the Earth’s shadow will block nearly the entire solar’s gentle from reaching the moon, tinging our lunar neighbor with darkness. This partial lunar eclipse is notable for its size, and most of North America could have a superb viewing alternative. 

“What’s full and vivid and crimson throughout? Tonight’s moon!” NASA tweeted on Thursday. “It is the longest partial lunar eclipse since 1440, and it is so near complete that a lot of the Western Hemisphere will be capable to see the midday flip crimson in Earth’s shadow.”

NASA statistics on lunar eclipses from 2001 via 2100 present this month’s partial eclipse would be the longest of the century, with a period of over 3 hours and 28 minutes. Evaluate that with the longest complete eclipse of the century, which occurred in 2018 and stretched for practically an hour and 43 minutes.

The Holcomb Observatory in Indiana shared a useful graphic displaying what to anticipate from the eclipse, which is able to cowl a lot of the moon. “This may even be the longest partial lunar eclipse in 580 years,” the observatory tweeted.

What does a lunar eclipse appear to be?


A partial lunar eclipse does not cowl your entire moon with shadow.


Lunar eclipses haven’t got the identical dramatic look as a photo voltaic eclipse the place it appears like somebody is carving a black gap out of the aspect of the solar. 

Throughout a lunar eclipse, the moon darkens and normally takes on a reddish coloration. For a partial eclipse, Earth’s shadow does not fully cowl the moon. Partial eclipses are nonetheless improbable experiences, and tonight’s will nonetheless cowl a lot of the moon.

“Partial lunar eclipses won’t be fairly as spectacular as complete lunar eclipses — the place the moon is totally coated in Earth’s shadow – however they happen extra incessantly,” NASA mentioned in a skywatching replace. “And that simply means extra alternatives to witness little adjustments in our photo voltaic system that typically happen proper earlier than our eyes.”

When is the 2021 lunar eclipse?

The eclipse will likely be seen to a big space of the globe throughout the night of Nov. 18 and into Nov. 19. Precise viewing instances will rely in your location, however at the very least a few of the eclipse will likely be seen in a lot of the Americas, Australia, and in components of Europe and Asia. The US will likely be in a terrific place to catch the eclipse motion.

Head over to and seek for your location to get your instances. If you wish to watch the complete course of, you might be in for a protracted night time. For instance, the partial-eclipse section will kick off at 12:18 a.m. MT on Nov. 19 for me in Albuquerque, New Mexico, and attain its most at about 2:02 a.m. I am going to most likely purpose to set an alarm for nearer to most somewhat than stand out within the chilly for hours. 

How one can watch the lunar eclipse from wherever

You’ve got on-line choices for following the moon motion. These video feeds are a superb fallback when you encounter cloudy climate, or when you simply do not wish to keep up late or stand up early to observe the eclipse in individual.

The Digital Telescope Mission will go stay with protection of the eclipse at 11 p.m. PT on Nov. 18 (7 a.m. UTC on Nov. 19). VTP is collaborating with astrophotographers from all over the world together with providing stay commentary from astrophysicist Gianluca Masi. has organized for its personal livestream beginning at 11 p.m. PT on Nov. 18.

The Griffith Observatory in California is providing its personal broadcast kicking off at 10 p.m. PT on Thursday.

Eclipses aren’t on a regular basis occurrences on Earth, and so they’re not all the time simply seen. Whereas some viewers may need to deal with middle-of-the-night scheduling for this month’s celestial occasion, it is value taking a second to marvel at how the moon, the solar and our planet are linked as residents of this photo voltaic system.

Correction at 8:07 a.m. PT Nov. 17: As a result of an modifying error, the headline beforehand included the mistaken day of the eclipse. It begins Thursday. 

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