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| 1849 | - | Corn Laws abolished in Britain |
| 1851 | - | SF Orphan\s Asylum 1st in Calif founded |
| 1862 | - | Telescope maker Alvin Clark discovers dwarf companion of Sirius |
| 1871 | - | Birds fly over SF in such large numbers they actually darken sky |
| 1911 | - | Congress names SF as Panama Canal opening celebration site |
| 1945 | - | Eddie Slovik 1st American executed for desertion since Civil War |
| 1950 | - | Pres Truman authorized production of H-Bomb |
| 1958 | - | 1st US satellite launched Explorer I from Cape Canaveral |
| 1958 | - | James van Allen discovers radiation belt |
| 1958 | - | US launches 1st artificial satellite Explorer 1 |
| 1961 | - | Ham is 1st primate in space (158 miles) aboard Mercury/Redstone 2 |
| 1966 | - | Luna 9 launched for moon |
| 1968 | - | Nauru gains independence from Australia |
| 1968 | - | "Record high barometric pressure (1083.8 mb 32\"") at Agata USSR" |
| 1971 | - | Apollo 14 launched 1st landing in lunar highlands |
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