December 1
Mercury moves into Capricorn

December 4
Venus moves into Scorpio

December 7
Hanukkah begins at Sunset; Pearl Harbor Day; Neptune goes direct at 24° Pisces 

December 12
New Moon in Sagittarius

December 13
Mercury retrogrades at 8° Capricorn

December 15
Hanukkah ends

December 21
Sun Moves into Capricorn; Winter Solstice; Yule

December 22
Mercury moves into Sagittarius 

December 24
Christmas Eve

December 25
Christmas Day

December 26
Kwanzaa begins; Boxing Day; Full Moon in Cancer: also known as the Cold Moon, the Long Night(s) Moon, and the Moon of Yule; Chiron goes direct at 15° Aries. 

December 29
Venus moves into Sagittarius

December 31
New Year’s Eve; Jupiter goes direct at 5° Taurus