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LITTLETON, CO - JANUARY 20, 2019: A super blood wolf moon eclipse is seen from Littleton, Colorado at 10:12 p.m. Mountain Standard Time on Sunday night. (Photo by Eric Lutzens/The Denver Post)

A U.S. Flag in downtown Washington flies in front of the moon during a lunar eclipse, Sunday, Jan. 20, 2019. The entire eclipse will exceed three hours. Totality - when the moon's completely bathed in Earth's shadow - will last an hour. Expect the eclipsed, or blood moon, to turn red from sunlight scattering off Earth's atmosphere. (AP Photo/J. David Ake)

The so-called Super Blood Wolf Moon slips into Earth's dark umbral shadow during a total lunar eclipse over Angel de la Independencia in Mexico City on January 20, 2019. - An unusual set of celestial circumstances comes together Sunday for skywatchers in Europe, Africa and the Americas, where a total lunar eclipse may be glimpsed, offering a view of a large, red Moon. (Photo by ALFREDO ESTRELLA / AFP)ALFREDO ESTRELLA/AFP/Getty Images

This combination photo shows the different stages of the blood moon and supermoon during a total lunar eclipse in Los Angeles, Sunday, Jan. 20, 2019.