Towel Day

Towel Day in honour of the work of the writer Douglas Adams

National Tap Dance Day

National Tap Dance Day (United States)

National Missing Children's Day

International Missing Children's Day and its related observances:
National Missing Children's Day (United States),

Resistance and Liberation Day (Lebanon)

Liberation Day (Lebanon)

Last bell

Last bell (Russia, post-Soviet countries)

Geek Pride Day

Geek Pride Day (geek culture)

First National Government

First National Government / National Day (Argentina)

May 25 (Eastern Orthodox liturgics)

Christian feast day:
May 25 (Eastern Orthodox liturgics)

Zenobius of Florence

Christian feast day:
Zenobius of Florence

Pope Gregory VII

Christian feast day:
Pope Gregory VII

Maximus of Évreux

Christian feast day:
Maximus (Mauxe) of Évreux

Mary Magdalene de' Pazzi

Christian feast day:
Mary Magdalene de Pazzi

Madeleine Sophie Barat

Christian feast day:
Madeleine Sophie Barat

Gerard of Lunel

Christian feast day:
Gerard of Lunel

Dúnchad mac Cinn Fáelad

Christian feast day:
Dúnchad mac Cinn Fáelad