ca. 451

“Sabbath Abolished” decree ordered by Yazdegerd II [Persia; Present-day Iran] [Unconfirmed]

Commentary from other sources:
1) Sassanian ruler Yazdegerd II of Persia’s decree abolishes the Sabbath and orders the execution of Jewish leaders, including the Exilarch Mar Nuna.
Avraham, Yerachmiel Ben: All in the Name of Jesus: The Murder of Millions (2016)