Mehregan was usually celebrated by Zoroastrian communities in both Pre-Islamic and Pahlavi times as a commemoration of the end of the harvest and the beginning of the Winter season. Records of its celebration have been noted by ancient and medieval authors as having occurred in Pre and times in not just the core of the Iranian lands but also Yemen, Egypt, China, India, and moreso. The associations with Mithra were detailed as a holy reminder of our mutual promises and duties with the divine reflected by a good harvest and sustenance for the coming Winter watched over by Mithra and Ahura Mazda.
