International Year of Soils

World Soil Day

Public holidays in Thailand

The King Bhumibol Adulyadej Memorial Birthday (Thailand)

Krampus

Saint Nicholas' Eve (Belgium, Czech Republic, Slovakia, the Netherlands, Hungary, Romania, Germany, Poland and the UK)
Krampusnacht (Austria)

Klozum

Klozum (Schiermonnikoog, Netherlands)

International Volunteer Day

International Volunteer Day for Economic and Social Development

Discovery Day

Discovery Day (Haiti and Dominican Republic)

Days of Military Honour

Day of Military Honour - Battle of Moscow (Russia)

Children's Day

Children's Day (Suriname)

December 5 (Eastern Orthodox liturgics)

Christian feast day:
December 5 (Eastern Orthodox liturgics)

Sabbas the Sanctified

Christian feast day:
Sabbas the Sanctified

Pelinus

Christian feast day:
Pelinus of Brindisi

Nicetius

Christian feast day:
Nicetius (Nizier)

Justinian of Ramsey Island

Christian feast day:
Justinian of Ramsey Island

John Almond (martyr)

Christian feast day:
John Almond

Dalmatius of Pavia

Christian feast day:
Dalmatius of Pavia