At a Glance
December 12
Observances & Celebrations
Commemorative holidays, national days, religious feasts, and international traditions observed on this date.
National observance
Constitution Day (Russia)
Russia
Religious observance
Feast of Corentin of Quimper
Religious observance
Feast of December 12 (Eastern Orthodox liturgics)
Religious observance
Feast of Edburga of Minster-in-Thanet
Religious observance
Feast of Finnian of Clonard
Religious observance
Feast of Ida of Nivelles
Religious observance
Feast of Jane Frances de Chantal
Religious observance
Feast of Our Lady of Guadalupe
Religious observance
Feast of Peter the Aleut
Religious observance
Feast of Thomas Holland
Religious observance
Feast of Vicelinus
Observance