| January 24th |
| 1848 | Gold discovered at Sutter's Mill in northern California setting off the 49er Gold Rush. |
| 1872 | Morris W. Travers was born. He codiscovered krypton, neon and xenon with William Ramsay. |
| 1966 | B. B. Cunningham (et al.), made first reported observation of absorption spectrum of compound of einsteinium at the University of California, Berkeley. |