Hamdamin, Salih Nabi , Javanpour Heravi, Aziz , Nowrozi Teymourlouie, Hossein . “Time units in the earth's rotation in terms of Fakhr Razi and Abu Rihan Biruni and their influence on the new age.” Theological – Doctrinal Research (Islamic Azad University-Saveh Branch), vol. 15, no. 2, 2025, pp. 65-89.