December () is the twelfth and last month of the year in the Gregorian Calendar and one of seven Gregorian months with the length of 31 days.

In Latin, decem means "ten". December was also the tenth month in the Roman calendar until a monthless winter period was divided between January and February.

December's flower is the narcissus or holly. December's birthstones are turquoise, lapis lazuli, zircon, topaz (blue), or tanzanite.

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 starts on the same day of the week as September.

Events in December

• Union Day of Romania (1 December)

• World AIDS Day (December 1)

• National Day of United Arab Emirates (December 2)

• Sinterklaas in The Netherlands (December 5)

• Father's Day (King's Birthday) in Thailand (December 5)

• Independence Day in Finland (December 6)

• Constitution Day in Spain (December 6)

• Saint Nicholas Day in Greece (December 6)

• Pearl Harbor Day in the United States (December 7)

• Fukuoka Marathon is held on first Sunday in December.

• Día de la Madre en Panamá (Mother's Day) in Panama. (December 8)

• Day of the Mary Immaculate Conception. (December 8)

• Constitution Day in Romania. (December 8)

• In the Ásatrú religion, Egil Skallagrimsson's Day (December 9) is a day of remembrance for the Viking hero.

• Nobel Prizes awarded (December 10) on the anniversary of Albert Nobel's death.

• Human Rights Day (December 10)

• Día de la Virgen de Guadalupe, or Day of the Virgin of Guadalupe, in Mexico (December 12)

• Independence Day (Jamhuri Day) in Kenya (December 12)

• Saint Lucy (December 13)

• Honolulu Marathon is held on second Sunday in December.

• Bill of Rights Day (United States). (December 15)

• Zamenhof Day (December 15)

• Victory day of Bangladesh (December 16)

• Day of Reconciliation in South Africa (December 16).

• Solstice (called the winter solstice in the Northern Hemisphere and the summer solstice in the Southern Hemisphere) occurs on dates varying from December 20 to December 22 (in UTC). See also Yule

• The Emperor's Birthday, a national holiday in Japan (December 23)

• Festivus (December 23)

• HumanLight (Humanist Holiday), (December 23)

• Christmas Eve (December 24)

• Christmas (December 25)

• Boxing Day (December 26)

• Day of Goodwill (December 26)

• Kwanzaa (December 26 to January 1)

• Proclamation Day in South Australia (December 28)

• Philippines - Rizal Day (December 30)

• New Year's Eve (December 31)

• Hannukah- [December 22 in 2008]

• Eid al-Adha[December 7 in 2008]

December symbols

• December's birthstone is the blue turquoise or zircon.

• Its birth flower is the Holly or Poinsettia.