Wikipedia was launched.
The website’s name comes from the Hawaiian word “wiki,” which means “quick.”
Source
A Chinese Long March rocket launched the Belarussian government's Belintersat-1 satellite into orbit.
Emperor Otho began his three-month reign after overthrowing the previous emperor.
The world-famous Swan Lake ballet premiered in St. Petersburg at the Imperial Mariinsky Theatre.
Space Mountain at Magic Kingdom opened at Walt Disney World Resort, Florida.
US Airways Flight 1549 landed on the Hudson River, NYC.