Organ donation

World Organ Donation Day

International Lefthanders Day

International Lefthanders Day (International)

August 13 (Eastern Orthodox liturgics)

Christian feast day:
August 13 (Eastern Orthodox liturgics)

Wihtberht

Christian feast day:
Wigbert

Radegund

Christian feast day:
Radegunde

Pope Pontian

Christian feast day:
Pope Pontian

Nerses IV the Gracious

Christian feast day:
Nerses Glaietsi (Catholic Church)

Maximus the Confessor

Christian feast day:
Maximus the Confessor

Marco d'Aviano

Christian feast day:
Blessed Marco d'Aviano

Junian of Mairé

Christian feast day:
Junian of Mairé

Jeremy Taylor

Christian feast day:
Jeremy Taylor (Anglican Communion)

Hippolytus of Rome

Christian feast day:
Hippolytus of Rome

Herulph

Christian feast day:
Herulph

Florence Nightingale

Christian feast day:
Florence Nightingale, Octavia Hill (Lutheran Church)

Fachtna of Rosscarbery

Christian feast day:
Fachtna of Rosscarbery