| Date | Name | Location / Topic | |
|---|---|---|---|
| National Day/May 1810 Revolution |  | ||
| Independence Day |  | ||
| Liberation and Resistance Day |  | ||
| Sing Out Day |  | ||
| Towel Day |  | ||
| National Missing Children's Day |  | ||
| Commonwealth Day observed |  | ||
| Eid al-Fitr (End of Ramadan) Holiday |  | ||
| Eid al-Fitr (End of Ramadan) Holiday |  | ||
| Eid al-Fitr (End of Ramadan) | | ||
| Eid-al-Fitr holiday | | ||
| Spring Bank Holiday |  | ||
| Memorial Day |  | ||
| Jefferson Davis Birthday | |||
| End of Ramadan Day 2 | | ||
| Africa Day |  | ||
| Ascension Day |  | ||
| Eid-al-Fitr Holiday | | ||
| National Wine Day |  | ||
| National Tap Dance Day |  | ||
| National Brown-Bag It Day |  | ||
| Day off for Commonwealth Day | | ||
| Jefferson Davis' Birthday |  | ||
| Ramadan holiday | |||
| Eid ul-Fitr | |||
| Ramzan Id/Eid-ul-Fitar | |||
| Idul Fitri Day 2 | |||
| Ramjan Edul Fikra | |||
| Eid-ul-Fitr Day 2 | |||
| Late May Bank Holiday |  | ||
| Geek Pride Day |  | ||
| Italian Beef Week |  |
Historical Events on May 25
- 1738: The border dispute between Pennsylvania and Maryland known as Cresap’s War or the Conojocular War ends when a treaty is signed between the two States. That treaty established the border and resulted in an exchange of prisoners between Pennsylvania and Maryland.
- 1787: The U.S Constitutional Convention begins in Philadelphia after delegates from 7 States have arrived.
- 1865: Approximately three hundred people die when an ordinance depot explodes in Mobile, Alabama.
- 1895: Novelist and playwright Oscar Wilde is convicted of gross indecency with male persons and is sentenced to 2 years in prison.
- 1940: British and French forces at Boulogne-sur-Mer surrender to the German 2nd Panzer Division at the Battle of Boulogne during World War 2.
- 1953: The U.S conducts a nuclear artillery site at the Nevada Test Site.
- 1953: KUHT, the first public television station in the U.S., begins broadcasting from the campus of the University of Houston.
- 1961: United States President John F. Kennedy addresses a special joint session of Congress and tells them of his goal to land a man on the Moon before the end of the decade.
- 1966: Explorer 32 launches on this day. Also known as Atmosphere Explorer-B, this satellite was designed to study the upper atmosphere.
- 1968: In the city of St. Louis in Missouri, the Gateway Arch is dedicated.
Famous Birthdays on May 25
- American poet and philosopher, Ralph Waldo Emerson is born in 1803.
- American evangelist and Nobel Prize laureate, John Mott is born in 1865.
- Dutch physicist and Nobel Prize laureate, Pieter Zeeman is born in 1865.
- American singer Kitty Kallen is born in 1921.
- American actor Claude Akins is born in 1926.
- American soldier and author, Robert Ludlum is born in 1927.
- American actress Anne Heche is born in 1969.
- American journalits and author, Stacy London is born in 1969.
- American actor and screenwriter, Jamie Kennedy is born in 1970.
- American actress and model, Molly Sims is born in 1973.
- Irish actor Cillian Murphy is born in 1976.
- American actor Ethan Suplee is born in 1976.