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International observance days, weeks, and months for April 25, 2026. Plus historical events and birthdays.
Events that occurred on April 25 throughout history
U.S. military from the East and Soviet military from the West met on the banks of the Elbe River marking an important turning point of World War II.
The U.S. Patent Office issued patent no. 2,981,877 to Robert N Noyce of Fairchild Semiconductor. In 1957, Noyce and 7 other engineers founded Fairchild Semiconductor Corporation. There he developed one of the first integrated circuits. In 1968, he co-founded Intel Corporation and the company released the first microprocessor in 1971.
Samantha Smith, a student from Manchester, Maine, receives a reply from Soviet leader Yuri V. Andropov. Learn more about Samantha Smith and Andropov's response here.
NASA astronauts deploy the Hubble Telescope from the space shuttle Discovery.
