DIOCLETIAN AND THE SOL INVICTUS IN SPALATO (Croatia)

Thanks to the cooperation with the Croatian scholar Zlatko Andrijašević – who had seen our discoveries on the Internet about the Arc and the Square of Light in the Pantheon at Rome – in 2021 we discovered the astronomical orientation of the Vestibule in Diocletian's Palace in Spalato (Split, Croatia).

During the days of the Summer Solstice, the oculus of the vestibule dome creates splendid illumination on the north side. As always, the light of the Sun was a signal of the favorable presence of the divinity. The Vestibule must have been the pla...