On this day:
1879: Sandford Fleming proposes the use of time zones. The later introduction of Universal Standard Time, which is based on time zones, revolutionized timekeeping.
Born on this day:
1834: Dmitri Mendeleev, Russian chemist and inventor who devised the periodic table of the elements was born in Tobolsk, Russia.
Gone on this day:
1957: John von Neumann was a Hungarian-American mathematician, physicist, computer scientist, and polymath. Regarded as the last representative of the great mathematicians who integrated both pure and applied sciences.