March 21 is the 80th day of the year (81st in leap years) in the Gregorian calendar; 285 days remain until the end of the year. == Events == === Pre-1600 === 537 – Siege of Rome: King Vitiges attempts to assault the northern and eastern city walls, but is repulsed at the Praenestine Gate, known as the Vivarium, by the defenders under the Byzantine generals Bessas and Peranius.
March 21 is the 80th day of the year (81st in leap years) in the Gregorian calendar; 285 days remain until the end of the year. == Events == === Pre-1600 === 537 – Siege of Rome: King Vitiges attempts to assault the northern and eastern city walls, but is repulsed at the Praenestine Gate, known as the Vivarium, by the defenders under the Byzantine generals Bessas and Peranius.
Source: Wikipedia "March 21" · CC BY-SA 4.0
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