December is the twelfth and last month of the year in the Julian and Gregorian Calendars and one of seven months with the length of 31 days.
December starts on the same day as September every year and ends on the same day as April every year.
December is the month with the shortest daylight hours of the year in the Northern Hemisphere and the longest daylight hours of the year in the Southern Hemisphere.
December in the Northern Hemisphere is the seasonal equivalent to June in the Southern Hemisphere and vice versa.
In the Northern hemisphere, the beginning of the meteorological winter is 1 December. In the Southern hemisphere, the beginning of the meteorological summer is 1 December.