Second Taiwan Strait Crisis

The memorial day for the Second Taiwan Strait Crisis(the August 23 shelling war) ( Taiwan)

National Doctors' Day

National Day for Physicians (Iran)

International Day for the Remembrance of the Slave Trade and its Abolition

International Day for the Remembrance of the Slave Trade and its Abolition

1944 Romanian coup d'état

European Day of Remembrance for Victims of Stalinism and Nazism or Black Ribbon Day (European Union and other countries), and related observances:
Liberation from Fascist Occupation Day (Romania)

Day of the National Flag (Ukraine)

Day of the National Flag (Ukraine)

August 23 (Eastern Orthodox liturgics)

Christian feast day:
August 23 (Eastern Orthodox liturgics)

Zacchaeus of Jerusalem

Christian feast day:
Zacchaeus of Jerusalem

Tydfil

Christian feast day:
Tydfil

Rose of Lima

Christian feast day:
Rose of Lima

Quiriacus of Ostia

Christian feast day:
Quiriacus and companions, of Ostia

Philip Benizi de Damiani

Christian feast day:
Philip Benitius

Lupus of Novae

Christian feast day:
Lupus (Luppus) of Novae

Éogan of Ardstraw

Christian feast day:
Éogan of Ardstraw

Asterius, Claudius and Neon

Christian feast day:
Asterius, Claudius, and Neon

Ascelina

Christian feast day:
Ascelina