The moon was full Sunday after being almost full Saturday night. It made its closest approach to the Earth -- the definition of a supermoon.
That combination made the moon seem about 14 percent larger in diameter than usual, NASA said. Supermoons typically appear about 30 percent brighter than the usual moon.
The Super Frost Moon lit up the sky Saturday night and will do so again Sunday night. Take a look at our time-lapse video.
It was a particularly bright supermoon for the United States, thanks to the more intense sunlight that reflects off the moon in winter, NASA said.
As if that weren't enough: This supermoon, the only one visible in 2017, was also a Super Frost Moon.
Kevin Kelleher
Karen West
The supermoon taken from Trevose, Pennsylvania.
Michele Stroba
The supermoon taken from Harrisburg, Pennsylvania.
Kevin Kelleher
The supermoon taken from West Chester, Pennsylvania.
Nicol Levin Davoli
The supermoon taken from Pennsburg, Pennsylvania.
Darin Davis
The supermoon taken from Columbus, Indiana.
Darin Davis
The supermoon taken from Columbus, Indiana.
Sheryl Booth
The supermoon from New Castle, Delaware.
Meredith Santinelli
The supermoon from New London Township, Pennsylvania.
Rosemary Mason
The supermoon from Sesame Place in Langhorne, Pennsylvania.
Michele Friant- Tarriero 3 hrs
The supermoon from Avondale, Pennsylvania.
Robin Wills Scott
The supermoon from Wilmington, Delaware.
Hilary Burke
The supermoon from Telford, Pennsylvania.
Tonia Savarese
The supermoon from Carney's Point, New Jersey.
Don Prem
The supermoon from Turnersville, New Jersey.
Debbie Wallace Genaro
The supermoon from Kennett Square, Pennsylvania.
Lee Gasparro
The supermoon from Upper Salford, Pennsylvania.
Nancy Kearney
The supermoon from Ridley Park, Pennsylvania.
Matt Modica
The supermoon from Sanatoga, Pennsylvania.
Kathy Arcado
The supermoon from Downingtown, Pennsylvania.
Angela Johnson Poccia
The supermoon from East Norriton, Pennsylvania.
Michael Capriotti
The supermoon from the Fox Chase section of Philadelphia.
Tiff Achenbach
The supermoon from Reading, Pennsylvania.
Deloris Mabins-Adenekan
Supermoon off Mississippi
Kasha
Moon bamboo at the City Wall in Xi'an China
Abbe Arenson
Frost Moon and pink sunset from Sanford, Florida
Christie Marks
Frost Moon In Atco, New Jersey
This last full moon of the year is known as a Frost Moon, Cold Moon or Moon Before Yule. It doesn't always correspond with a supermoon (though it did in December 2016).
NASA, which apparently has a sense of humor, suggested dressing for the occasion. "As usual, the wearing of suitably celebratory celestial attire is encouraged in honor of the full Moon."
