Biruni Day · Ruz-e Abu Reyhan-e Biruni

Culture of origin: Iranian · Cultural

Holiday sources: Iran

Abu Rayhan al-Biruni (c. 973 – c. 1050) was a polymath from Khwarazm who wrote on astronomy, mathematics, history and languages, and has been called the first anthropologist. Around 1000 he finished al-Athar al-Baqiya, the Chronology of Ancient Nations, a comparative study of the calendars of many peoples. Iran's calendar also marks 13 Shahrivar as Anthropology Day.