Wikipedia:Selected anniversaries/May 28
On May 28:
- 585 BC - Cardinal dates: A solar eclipse occurred, as predicted by Thales.
- 1588 - The Spanish Armada set sail from Lisbon for the English Channel.
- 1892 - In San Francisco, John Muir organized the Sierra Club.
- 1936 - Alan Turing submitted "On Computable Numbers" for publication.
- 1999 - Leonardo da Vinci's newly restored Last Supper went back on display.