Mehreganis a Zoroastrian and Persian festival celebrated to honor the Yazata Mithra, which is responsible for friendship , affection and Love. Alsp widely referred to as the Persian festival ofautumn. The festival falls on these 196th day of the Iranian year ( 10thmehr, ) on These days farmers carried out their harvest and prayed to God for it . it is Thanksgiving day for the Iranian farmers in other days mehregan. This feast would be celebrated for 6 days starting on the 16th of month Mehr. The oldest historical record about Mehregangoes back to the Achaemenian times.