Full moon to light Chicago sky on Christmas Day

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

CHICAGO – It hasn’t happened on Christmas Day since 1977, and it won’t happen again for nearly 20 years.

A full moon will light the sky this Friday. It should peak around 5 a.m. Chicago time.

It’s called a “full cold moon” because it shows up during the beginning of winter.

The Christmas full moon in 1977 was one of just four in the 20th century, preceded by others in 1901, 1920 and 1950.

This century will feature five. Following this year’s, Christmas full moons will return in 2034, 2053 and 2072 and 2091.