Razi Day · Ruz-e Razi

Culture of origin: Iranian · Cultural

Holiday sources: Iran

Abu Bakr Muhammad ibn Zakariya al-Razi (c. 864 – 925 or 935), born in Ray, was a physician, philosopher and alchemist who headed hospitals in Baghdad and Ray. He was among the first to tell smallpox from measles clinically, and his medical encyclopaedia al-Hawi, in Latin Continens, shaped medieval European medicine. He ranked reason highest and was critical of prophecy and revelation. In Iran the day is also Pharmacists' Day.