UN Spanish Language Day

UN Spanish Language Day (United Nations)

UN English Language Day

UN English Language Day (United Nations)

World Book Day

World Book Day

Navy Day

Navy Day (China)

National Sovereignty and Children's Day

National Sovereignty and Children's Day (Turkey and Northern Cyprus)

Anglo-Manipur War

Khongjom Day (Manipur)

International Pixel-Stained Technopeasant Day

International Pixel-Stained Technopeasant Day

Castile and León Day

Castile and León Day (Castile and León)

Canada Book Day

Canada Book Day (Canada)

April 23 (Eastern Orthodox liturgics)

Christian feast day:
April 23 (Eastern Orthodox liturgics)

Beatification

Christian feast day:
Blessed Teresa Maria Manetti

Saint George's Day in England

Christian feast day:
Saint George's Day and its related observances:
Saint George's Day (England)

Saint George's Day in Catalonia

Christian feast day:
Saint George's Day and its related observances:
Saint George's Day (Catalonia)

Toyohiko Kagawa

Christian feast day:
Toyohiko Kagawa (Episcopal and Lutheran Church)

Beatification

Christian feast day:
Blessed Maria Gabriella Sagheddu