I'm writing this on the evening of December 23rd, and as I sit at my computer desk I can look out of the window at the almost full moon, framed in the bare branches of an oak tree, and surrounded by a halo of ice crystals. It's astonishingly beautiful. I'll post this on December 24th, which is a full moon as well as being Christmas Eve .
There's a full moon each month (sometimes there are two), and each month's full moon has its own character. A full moon in December is in the sky a long time, because December nights are the longest of the year (in the Northern Hemisphere). So one of the names of December's full moon is Long Night's Moon. Since tonight's full moon is just two days from the winter solstice, it's about as long as it can possibly be. Other names for this full moon include Winter Moon, Snow Moon, Frost Moon, Oak Moon (appropriate for me) and Moon Before Yule.
Thanks to KerrDeLune of Beyond the Fields We Know for permission to use the image. Like me, she blogs about the cycles of the moon and sun, and the turning of the seasons. She's also a far, far better photographer than I am.