At a Glance
April 1
Observances & Celebrations
Commemorative holidays, national days, religious feasts, and international traditions observed on this date.
National observance
Cyprus National Day (Cyprus)
Religious observance
Feast of April 1 (Eastern Orthodox liturgics)
Religious observance
Feast of Cellach of Armagh
Religious observance
Feast of Frederick Denison Maurice (Church of England)
Religious observance
Feast of Hugh of Grenoble
Religious observance
Feast of Mary of Egypt
Religious observance
Feast of Melito of Sardis
Religious observance
Feast of Tewdrig
Religious observance
Feast of Theodora
Religious observance
Feast of Walric, abbot of Leuconay
Observance
April Fools' Day
Observance
Arbor Day (Tanzania)
Observance
Civil Service Day (Thailand)
Thailand
Observance
Edible Book Day
Observance
Fossil Fools Day
Observance