| Holiday name | Holiday location | Holiday type |
|---|---|---|
| Feast of St Joseph the Worker | Holy See (Vatican City) | National Holiday |
| Worker's Day | Multiple [Show] | Public Holiday |
| Labor Day / May Day | Multiple [Show] | Multiple Types |
| Labor Day / May Day | Multiple [Show] | Multiple Types |
| Batman Day | - | (Art & Entertainment) |
| Loyalty Day | United States | Observance |
| Labor Day | Multiple [Show] | Multiple Types |
| Maharashtra Day | India | State Holiday |
| National Mother Goose Day | - | Unofficial (Education & Reading) |
| National Chocolate Parfait Day | - | Unofficial (Food & Drinks) |
| Law Day | - | Unofficial (Work & Occupation) |
| Law Day | United States | Observance |
| School Principals’ Day | - | Unofficial (Work & Occupation) |
| Silver Star Service Banner Day | - | Unofficial (Appreciation & Honor) |
| National Melanoma Monday | - | Unofficial (Awareness & Cause, Health & Body) |
| Labour Day | Multiple [Show] | Multiple Types |
| Agriculture and Labor Day | Haiti | National/legal Holiday |
| National Workers Day | Saint Vincent and The Grenadines | Public Holiday |
| Lei Day | United States (Hawaii) | Local Observance |
| May Day | Multiple [Show] | Multiple Types |
| Constitution Day | Marshall Islands | Public Holiday |
| Labour Day/May Day | Multiple [Show] | Multiple Types |
| Unity Day | Kazakhstan | Public Holiday |
| Worker's Day | Multiple [Show] | Public Holiday |
| Spring and Labor Day | Russia | National Holiday |
| Labor and Solidarity Day | Turkey | National Holiday |
| Liberation Day/Reunification Day observed | Vietnam | National Holiday |
| International Labor Day | Multiple [Show] | Multiple Types |
| International Worker’s Day | Albania | National Holiday |
| Early May Bank Holiday | Multiple [Show] | Multiple Types |
| International Labour Day | Kosovo | Official Holiday |
| Constituent Assembly Convocation Day | Latvia | National Holiday |
| International Day of Solidarity of Workers | Moldova | National Holiday |
| Labor day | Multiple [Show] | Multiple Types |
| Labor holiday | Serbia | National Holiday |
| May 1st | Sweden | Public Holiday |
| International Workers' Day | Eritrea | Public Holiday |
| Workers' Day | Multiple [Show] | Public Holiday |
| Workers Day | Zimbabwe | Public Holiday |
Historical Events on May 1
- 1759: The Wedgwood Pottery Co. is founded by Josiah Wedgwood in Great Britain.
- 1776: Adam Weishaupt establishes the Illuminati in Upper Bavaria.
- 1778: The Battle of Crooked Billet starts during the American Revolution in Hatboro, Pennsylvania.
- 1840: The first official adhesive stamp – the Penny Black – is issued in the U.K.
- 1844: The Hong Kong Police Force is established on this day. It would be the first modern police force in Asia and the second modern police force in the world.
- 1862: The capture of New Orleans is completed by the Union Army during the American Civil War.
- 1863: During the American Civil War, the Battle of Chancellorsville starts.
- 1866: The Memphis Race Riots start on this day. Almost 50 black and 2 white are killed during the incident. Reports of the atrocities would help the 14th Amendment to the U.S Constitution get passed.
- 1875: After burning down in 1873, the Alexandra Palace reopens on this date.
- 1930: Pluto is officially given its name on this day.
- 1931: In New York City, the Empire State Building is dedicated.
- 1941: German forces attack Tobruk during World War II.
- 1944: In retailiation for General Franz Krech being killed by partisans in Malaoi, German soldiers shoot 200 Communist prisoners at Kaisariani.
- 1945: The Soviet Flag is raised over the Reich Chancellery during World War II.
- 1945: After having killed their children by inserting cyanide pills into their mouths, Nazi propaganda minister Joseph Goebbels and his wife Magda Goebbels commit suicide in the Reich Garden.
- 1945: In the wake of the Soviet advance in Demmin in Germany, approximately twenty-five hundred people die in a mass suicide.
Famous Birthdays on May 1
- Irish-English 1st Duke of Wellington and Prime Minister of the U.K., Arthur Wellesley is born in 1769.
- Irish poet and author, James Clarence Mangan is born in 1803.
- American frontierswoman and scout, Calamity Jane is born in 1852.
- Spanish neuroscientist and Nobel Prize laureate, Santiago Ramon y Cajal is born in 1852.
- American actress Julie Benz is born in 1972.
- American actor James Badge Dale is born in 1978.
- American NHL hockey player, David Backes is born in 1984.
