April 13: Songkran, Thai New Year. Today Songkran, the Thai New Year festival, begins. People splash water on each other to wash away the old year and welcome the new one. In Bangkok, crowds with water pistols fill the streets near Wat Arun, the Temple of Dawn.
1742 π¨ George Frideric Handel's Messiah was performed for the first time in Dublin, and its joyful "Hallelujah" chorus became one of the world's most famous songs.
1943 ποΈ The Jefferson Memorial, a round marble building with a tall bronze statue inside, was opened in Washington, D.C., on Thomas Jefferson's 200th birthday. Jefferson Memorial β
1960 π The United States launched Transit 1-B, the world's first satellite navigation system, an early ancestor of the GPS that helps maps find your location.