If you live in the Northern Hemisphere and thought you didn’t need street lights to meander outside last night, you will have the same brightness tonight – unless you are in or around Chicago’s expected first big snowfall.
The bright light is thanks to the Long Night Moon, a full moon also called the Cold Moon, it shines from dusk to dawn.
Considered by some as the last full moon of the decade, it will be at its fullest at 9:28 CT Dec. 29, 2020. But because it is still lighting the sky after midnight it might be on some calendars as Dec. 30.
Other sky watchers consider Dec. 12, 2019 the last full moon of the decade.