Anniversary of Zoroaster's Death (Zoroastrian Founder), Dey 5. This day in the Jalali calendar is observed in memory of the death of Zoroaster, the founder of Zoroastrianism. Zoroaster is regarded as a significant figure in the history of Iran and the ancient world, with his teachings playing a major role in shaping Iranian culture and thought. Within Zoroastrian communities, the day serves as an occasion to reflect on Zoroaster’s teachings and his influence on Iranian culture. Memorial ceremonies and gatherings are held in some Zoroastrian communities, where people come together to read passages from the Avesta and commemorate Zoroaster’s legacy. The observance also provides an opportunity for those interested in Iranian history and culture to learn more about Zoroaster’s ideas and heritage. The significance of this date remains strong among followers of Zoroastrianism, and special ceremonies are held in certain regions of Iran and around the world. This commemoration symbolizes the cultural and historical continuity of Iranians with their past and highlights Zoroaster’s role in the formation of their national and religious identity.