Barack Obama Day

Barack Obama Day in Illinois in the United States

Remembrance days in Slovakia

Matica slovenská Day (Slovakia)

Cook Islands

Constitution Day (Cook Islands); first Monday in August

Coast Guard Day

Coast Guard Day (United States)

August 4 (Eastern Orthodox liturgics)

Christian feast day:
August 4 (Eastern Orthodox liturgics)

Saint Sithney

Christian feast day:
Sithney, patron saint of mad dogs

Raynerius of Split

Christian feast day:
Raynerius of Split

Mo Lua of Killaloe

Christian feast day:
Molua (or Lua)

John Vianney

Christian feast day:
John Vianney

Frédéric Janssoone

Christian feast day:
Blessed Frédéric Janssoone

Eufronius

Christian feast day:
Euphronius

Aristarchus of Thessalonica

Christian feast day:
Aristarchus

Duane Thomas

Duane Thomas, American football player (born 1947)

Tsung-Dao Lee

Tsung-Dao Lee, Chinese-American physicist and academic, Nobel Prize laureate (born 1926)

Charles Cyphers

Charles Cyphers, American actor (born 1939)