At a Glance
December 18
Observances & Celebrations
Commemorative holidays, national days, religious feasts, and international traditions observed on this date.
National observance
National Day (Qatar)
Qatar
National observance
Republic Day (Niger)
International observance
UN Arabic Language Day (United Nations)
Religious observance
Feast of December 18 (Eastern Orthodox liturgics)
Religious observance
Feast of Expectation of the Blessed Virgin Mary
Religious observance
Feast of Flannán
Religious observance
Feast of Gatianus of Tours
Religious observance
Feast of O Adonai
Religious observance
Feast of Sebastian (Eastern Orthodox Church)
Religious observance
Feast of Winibald
Observance