World Statistics Day

World Statistics Day

World Osteoporosis Day

World Osteoporosis Day

Public holidays in Vietnam

Vietnamese Women's Day (Vietnam)

Public holidays in Guatemala

Revolution Day (Guatemala), one of the two Patriotic Days (Guatemala)

Heroes' Day

Heroes' Day (Kenya)

Arbor Day

Arbor Day (Czech Republic)

October 20 (Eastern Orthodox liturgics)

Christian feast days:
October 20 (Eastern Orthodox liturgics)

Mater Admirabilis

Christian feast days:
Mater Admirabilis

Maria Bertilla Boscardin

Christian feast days:
Maria Bertilla Boscardin

Paul of the Cross

Christian feast days:
Paul of the Cross (in USA, moved from Oct. 19)

Margaret Mary Alacoque

Christian feast days:
Margaret Marie Alacoque (in Canada, moved from Oct. 16)

Magdalene of Nagasaki

Christian feast days:
Magdalene of Nagasaki

Irene of Tomar

Christian feast days:
Irene of Tomar

Hedwig of Silesia

Christian feast days:
Hedwig (in Canada, moved from Oct. 16)

Caprasius of Agen

Christian feast days:
Caprasius of Agen