Yahrtzeit of Ravina, co-editor of the Babylonian Talmud, a voluminous work that is the prime repository of Jewish law and lore. Ravina's father died when he was young, so he was educated by his mother. In 475 CE, Ravina and his teacher Rav Ashi collected and commented on the rabbinic discussions that would henceforth be known as the Babylonian Talmud. Ravina's death in 499 CE marked the end of the talmudic period.