Wikipedia:Selected anniversaries/January 28
- 1521 - The Diet of Worms was convened to discuss Martin Luther and the Protestant Reformation in the Holy Roman Empire.
- 1855 - A locomotive on the Panama Railway made the world's first transcontinental crossing.
- 1918 - Rebels seized control of Helsinki, forcing the Senate of Finland underground during the Finnish Civil War.
- 1921 - A symbolic Tomb of the Unknown Soldier was installed beneath the Arc de Triomphe in Paris.
- 1986 - NASA Space Shuttle Challenger exploded 73 seconds into its tenth mission.
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