Historical Events on May 26

30 significant historical events occurred on May 26. May 26 has seen various historical events over the centuries, including diplomatic agreements and sporting events. Notable events on this date include the 1879 Treaty of Gandamak, which ended the first phase of the Second Anglo-Afghan War, several Formula One races at venues like Monaco and the Netherlands, and the signing of the Anti-Ballistic Missile Treaty between the United States and the Soviet Union in 1972.