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Basilica de San Petronio in Bologna Was Instrumental in the Creation of the Leap Year (Italy).

Basilica de San Petronio in Bologna Was Instrumental in the Creation of the Leap Year

It’s a fact that Basilica de San Petronio in Bologna was instrumental in the creation of the leap year (366 days) in our modern-day calendar. Why? Read below. How the leap year came into existence. Inside the Basilica, you’ll find a large sundial, measuring 67.7 meters. This is the world’s longest indoor meridian line designed […]

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