Year 1320 (MCCCXX) was a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar. Events of 1320 January 20 – Duke Wladyslaw Lokietek becomes king of Poland. April 6 – The Scots reaffirm their independence by signing the Declaration of Arbroath. Ghiyas al-Din Tughlaq founds the Tughlaq dynasty of the Delhi Sultanate. The Venetian Arsenal's rebuilt as the Arsenal Nuovo. The Second Shepherds' Crusade begins. Dante's Quaestio de Aqua et Terra's… (More on 1320)