If you have a thing for moon phases or numbers then mark your calendar for this upcoming celestial event.
On Dec. 12 (12/12) at 12:12 a.m. ET the Cold Moon will become a full moon, according to the Farmers' Almanac.
"The midwinter full moon has a high trajectory across the sky, causing it to sit above the horizon for a longer period of time," Farmers' Almanac explained.
The final full moon of the lunar cycle this year, and of the decade, is also known as the "Long Night's Moon" -- a fitting title as winter solstice nears which brings longer, darker nights.
And to top off the numerical calendar fun, the next day is Friday the 13th.
This story was originally published by ABC News.