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.

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