Tatiana Day

Tatiana Day or Russian Students Day (Russia, Eastern Orthodox)

National Voters' Day

National Voters' Day (India)

National Police Day (Egypt)

National Police Day (Egypt)

Public holidays in Indonesia

National Nutrition Day (Indonesia)

January 25 (Eastern Orthodox liturgics)

Christian feast day:
January 25 (Eastern Orthodox liturgics)

Week of Prayer for Christian Unity

Christian feast day:
The last day of the Week of Prayer for Christian Unity (Christian ecumenism)

Gregory of Nazianzus

Christian feast day:
Gregory the Theologian (Eastern (Byzantine) Catholic Church)

Conversion of Paul the Apostle

Christian feast day:
Feast of the Conversion of Saint Paul (Eastern Orthodox, Oriental Orthodox, Roman Catholic, Anglican and Lutheran churches, which concludes the Week of Prayer for Christian Unity)

Dwynwen

Christian feast day:
Dydd Santes Dwynwen (Wales)

Burns supper

Burns Night (Scotland)

Betico Croes

Betico Day (Aruba)

Gloria Romero

Gloria Romero, Filipino actress (born 1933)

Sanath Nishantha

Sanath Nishantha, Sri Lankan politician (born 1975)

Brumadinho dam disaster

A mining company's dam collapses in Brumadinho, Brazil, a south-eastern city, killing 270 people.

Neagu Djuvara

Neagu Djuvara, Romanian historian, essayist, philosopher, journalist, novelist and diplomat (born 1916)