| Date | Weekday | Event |
|---|
| May 1, 1006 | Thursday | Supernova observed in Lupus the Wolf constellation |
|
| May 1, 1682 | Friday | Louis XIV & his court inaugurate Paris Observatory |
| May 1, 1701 | Sunday | England - Wales & Scotland form UK of Great Britain |
| May 1, 1840 | Friday | 1st adhesive postage stamps ("Penny Blacks" from England) issued |
| May 1, 1841 | Saturday | 1st wagon train leaves Independance - Mo for Cal |
| May 1, 1850 | Wednesday | John Geary becomes 1st SF mayor |
| May 1, 1860 | Tuesday | 1st school for deaf founded |
| May 1, 1869 | Saturday | Folies-Bergre opens in Paris |
| May 1, 1873 | Thursday | 1st US postal card issued |
| May 1, 1884 | Thursday | Construction begins on Chicago 1st skyscraper |
| May 1, 1890 | Thursday | May Day |
| May 1, 1892 | Sunday | Angel Is US Quarantine Station opens |
| May 1, 1920 | Saturday | Babe Ruth's 1st Yankee HR & 50th of career - out of Polo Grounds |
| May 1, 1926 | Saturday | Dogers & Braves deadlock at 1-1 in 26 innings |
| May 1, 1926 | Saturday | Satchel Paige makes pitching debut in Negro Southern League |
| May 1, 1928 | Tuesday | Lei Day begun (a Hawaiian celebration) |
| May 1, 1931 | Friday | Empire State Building opens in NYC |
| May 1, 1932 | Sunday | Charles Lindbergh's baby kidnapped |
| May 1, 1947 | Thursday | Radar for coml & private planes 1st demonstrated |
| May 1, 1948 | Saturday | Dem People's Rep of Korea (N Korea) established |
| May 1, 1949 | Sunday | Gerard Kuiper discovers Nereid - (2nd satellite of Neptune) |
| May 1, 1951 | Tuesday | Mickey Mantle's 1st HR |
| May 1, 1955 | Sunday | Bobby Feller's 15th 1-hit or less game |
| May 1, 1960 | Sunday | Russia shoots down Francis Gary Powers' US spy plane |
| May 1, 1961 | Monday | 1st US airplane hijacked to Cuba |
| May 1, 1964 | Friday | 1st BASIC program run on a computer (Dartmouth) |
| May 1, 1975 | Thursday | Islander Parise & Potvin score within 14 seconds in playoffs Flyers 5-Isles 4 - Semi Finals- Flyers hold 2-0 lead |
| May 1, 1977 | Sunday | Empress Lilly dedicated |
| May 1, 1979 | Tuesday | Marshall Islands becomes self-governing |
| May 1, 1980 | Thursday | Sabres & Islanders play to 1:20 of 5th period in a playoff |
| May 1, 1982 | Saturday | Nordiques 4-Isles 5 (OT) - Semi-Finals- Isles hold 3-0 lead |