Don’t Miss the Longest “Blood Moon” Eclipse in Over 500 Years Tonight

November 18, 2021 at 4:19 pm

The full moon will appear “blood-red” for full 3 and a half hours tonight!


Lunar eclipses happen about twice a year, but rarely do they last as long as the one that’s happening tonight.

The Earth will cast a red shadow over 98% of the full moon tonight for a full 3 hours and 28 minutes and 23 seconds.

That’s the longest-lasting near-total lunar eclipse since 1440, and it won’t be surpassed until 2669, according to the Holcomb Observatory.

A total – or near-total – lunar eclipse is sometimes called a “Blood Moon” because the moon turns a coppery-reddish color when it’s completely submerged in the Earth’s shadow.

While Earth blocks the sun’s short-wavelength blue light, the long-wavelength red light bends around the edges of the earth and reaches the Moon’s surface.

The moon will remain almost entirely reddish-orange from 2 am to 5:30 am Eastern Standard Time on the morning of November 19.