On This Day: April 30

2 verified moments happened on April 30. Here they are in the order they actually happened — the same kind of puzzle you solve in Whensly every day.

1. 1961 Willie Mays hits four home runs in a single game for the Giants against the BravesSports · Source: https://www.baseball-almanac.com/boxscore/04301961.shtml
2. 1993🌐 CERN releases World Wide Web software royalty-free into the public domain, opening the web to everyone.History · Source: CERN, '30 years of a free and open Web' (Apr 30 1993)