On May 1, 1994, the first Formula One race took place in the new international circuit of A1-Ring in Austria, which was a significant development in motorsport.

On May 1, 1969, the first message was sent over the ARPANET, marking the birth of the internet as we know it.

May 1, 1886, saw the first Labor Day protests in Chicago, where workers demanded an eight-hour workday, leading to the Haymarket Affair.