Career
He is best known for his role in the 1925 transition of the official calendar from the Islamic calendar of Hejri Ghamarei to the Iranian civil calendar, also known as Hejri shamsi. Shahrokh and Irani shared a late 18th century ancestor, most of whose children migrated to India, and from which Dinshah Irani"s family descended. Shahrokh was a scion of another branch, descending from the elder son - who had remained in Iran - of that ancestor.