UN Russian Language Day

UN Russian Language Day

Queensland Day

Queensland Day

Huntington's disease

National Huntington's Disease Awareness Day in the United States

National Day of Sweden

National Day of Sweden, marking the end of the Kalmar Union and the coronation of King Gustav Vasa

Memorial Day (South Korea)

Memorial Day in South Korea

Public holidays in North Korea

Korean Children's Union Foundation Day in North Korea

Engineer's Day

Engineer's Day in Taiwan

Normandy landings

D-Day Invasion Anniversary

June 6 (Eastern Orthodox liturgics)

Christian feast day:
June 6 (Eastern Orthodox liturgics)

Norbert of Xanten

Christian feast day:
Norbert

Maria Laura Mainetti

Christian feast day:
Blessed Maria Laura Mainetti

Marcellin Champagnat

Christian feast day:
Marcellin Champagnat

Ini Kopuria

Christian feast day:
Ini Kopuria (Anglican Church of Melanesia, Church of England, Episcopal Church)

Claudius of Besançon

Christian feast day:
Claudius of Besançon

Starship flight test 4

The launch of SpaceX Starship integrated flight test 4 (IFT-4)