Nations, Nationalities and Peoples' Day

Nations, Nationalities and Peoples' Day (Ethiopia)

Public holidays in Albania

National Youth Day (Albania)

Hari-Kuyō

Hari-Kuyō (Kansai region, Japan)

Arbor Day

Earliest day on which National Tree Planting Day can fall, while December 14 is the latest; celebrated on the second Monday in December. (Malawi)

Jean Sibelius

Day of Finnish Music (Finland)

Liberation Day (Syria)

Liberation Day (Syria)

Public holidays in Uzbekistan

Constitution Day (Uzbekistan)

Public holidays in Romania

Constitution Day (Romania)

December 8 (Eastern Orthodox liturgics)

Christian feast day:
December 8 (Eastern Orthodox liturgics)

Romaric

Christian feast day:
Romaric

Richard Baxter

Christian feast day:
Richard Baxter (US Episcopal Church)

Pope Eutychian

Christian feast day:
Pope Eutychian

Patapios

Christian feast day:
Patapios of Thebes

Holidays with paid time off in the United States

Christian feast day:
Feast of the Immaculate Conception (public holiday in several countries, a holy day of obligation in others), and its related observances:
Lady of Camarin Day (Guam)

Mother's Day

Christian feast day:
Feast of the Immaculate Conception (public holiday in several countries, a holy day of obligation in others), and its related observances:
Mother's Day (Panama)