| Holiday name | Holiday location | Holiday type |
|---|---|---|
| Opium Suppression Movement Day | Taiwan | Observance |
| European Bicycle Day | Germany | Observance |
| Martyr's Day | Uganda | Public Holiday |
| National Egg Day | - | Unofficial (Food & Drinks) |
| National Repeat Day | - | Unofficial (Activity & Action) |
| National Chocolate Macaroons Day | - | Unofficial (Food & Drinks) |
| National Leave The Office Early Day | - | Unofficial (Work & Occupation) |
| Jefferson Davis' Birthday | United States (Florida) | Local Observance |
| Jefferson Davis' Birthday | United States (Alabama) | State Holiday |
| Corpus Christi | Colombia | National Holiday |
| Western Australia Day | Australia (Western Australia) | Common State Holiday |
| Queen's Birthday | Multiple [Show] | Multiple Types |
| Gawai Dayak Holiday observed | Malaysia (Sarawak) | Common Local Holiday |
| June Bank Holiday | Ireland | National Holiday |
Historical Events on June 3
- 1861: Confederate forces are routed by Union forces in Barbour County, Virginia at the Battle of Philippi during the American Civil War.
- 1864: During the American Civil War, Confederate troops are attacked by Union troops at the Battle of Cold Harbor in Hanover County, Virginia.
- 1885: Big Bear escapes the North-West Mounted Police on this day.
- 1889: A power line connecting a generator in Willamette Falls and Portland, Oregon is finished on this day. It ran for 14-miles and is the first long-distance electric power line in the U.S.
- 1916: The size of the U.S National Guard is approved to be increased to over 450,000 troops thanks to the National Defense Act being signed into law on this day.
- 1935: A protest trek begins by unemployed Canadian workers who board freight trains in Vancouver on their way to Ottawa.
- 1940: Paris is heavily bombed by the German Luftwaffe during World War 2.
- 1940: During World War 2, The Battle of Dunkirk comes to an end with Germany winning the battle and Allied forces being forced to retreat.
- 1940: The plan by Franz Rademacher to make Madagascar the “Home of the Jews” is forwarded on this day.
- 1941: The Greek village of Kandanos is burned to the ground and all of its residents – almost 200 people – are murdered by the Wehrmacht during World War 2.
- 1942: Unalaska Island is bombed by the Japanese as the begin their Aleutian Islands Campaign during World War 2.
- 1943: During the Zoot Suit Riots in Los Angeles, United States Sailors and Marines clash with young Latinos.
Famous Birthdays on June 3
- American Colonel and President of the Confederate States of America, Jefferson Davis is born in 1808.
- Dutch painter Johan Jongkind is born in 1819.
- French painter and illustrator, Raoul Dufy is born in 1877.
- American surgeon and physician, Charles R. Drew is born in 1904.
- American actress and model, Paulette Goddard is born in 1910.
- American actress and screenwriter, Ellen Corby is born in 1911.
