| Date | Event |
|---|---|
| April 03 1961 | Australia: Leadbeater's Possum Rediscovered |
| April 08 1961 | MV Dara Explosion Kills 238 |
| April 09 1961 | Pacific Electric Railway Closes In L.A |
| April 11 1961 | Trial Of Adolf Eichmann Begins In Jerusalem |
| April 12 1961 | Gagarin First Human To Travel To Space |
| April 16 1961 | Castro Makes Cuba Communist |
| April 17 1961 | CIA Backed Cuban Exiles Attack Castro |
| April 18 1961 | Vienna Convention On Diplomatic Relations Is Adopted |
| April 18 1961 | CONCP Fronts Pro-African Movements |
| April 20 1961 | Bay Of Pigs Invasion Failure Cuba |
| April 23 1961 | Algiers Putsch By French Generals |
| April 25 1961 | Noyce Granted Patent For Integrated Circuit |
| April 27 1961 | The First Prime Minister Of UK,grants Independence To Sierra Leone |
| April 30 1961 | Russia's First Commissoned Nuclear Submarine Was K-19 |