| Global Understanding Day | |
| Daylight Savings Time in WESTERN EUROPE starts this Sunday. | |
| Maryland founded as a Catholic colony | |
| Christiaan Huygens discovers Titan, (Saturn's largest satelite) | |
| Greece gains its independence. | |
| Frederick Laggenheim takes the 1st photograph of a solar eclipse | |
| Purcell and Ewen detect 21-cm radiation at Harvard physics lab | |
| RCA manufactures the first COLOR television. | |
| East Germany granted full sovereignty by occupying power, USSR | |
| First guided missile launched from nuclear powered sub (Halibut) | |
By Scott Labrecque version 9.4.0.0