Astronomy buffs across the United States have been promised all the makings of a spectacular total lunar eclipse on Sunday except one — clear skies.

Star gazers from Los Angeles to New York will keep their eyes on the sky for the eclipse, known as a super blood wolf moon, expected to appear at 11:41 p.m. EST.

Although it is a total eclipse, the moon will never go completely dark but rather take on a coppery red glow — called a blood moon. It is also a full moon that is especially close to Earth, called a supermoon.