Historical Events on January 20

14 significant historical events occurred on January 20. January 20 has been a date of important political and historical events over the years. Notably, it includes the tragic 1942 Wannsee Conference that coordinated the Holocaust and the 1990 Black January massacre in Baku. It also marks recent American political events like the presidential inaugurations of Donald Trump in 2017 and Joe Biden in 2021. On this date in 1914, the International Convention for the Safety of Life at Sea maritime treaty was established.