28 BC – A sunspot is observed by Han dynasty astronomers during the reign of Emperor Cheng of Han, one of the earliest dated sunspot observations in China.

 



1503 – Christopher Columbus visits the Cayman Islands and names them Las Tortugas after the numerous turtles there.


1773 – The Parliament of Great Britain passes the Tea Act, designed to save the British East India Company by reducing taxes on its tea and granting it the right to sell tea directly to North America. The legislation leads to the Boston Tea Party.


1857 – Indian Rebellion of 1857: In India, the first war of Independence begins. Sepoys mutiny against their commanding officers at Meerut.


1904 – The Horch & Cir. Motorwagenwerke AG is founded. It would eventually become the Audi company.


1908 – Mother's Day is observed for the first time in the United States, in Grafton, West Virginia.