Were Al-Biruni and Urban II alive at the same time?
Yes. Al-Biruni and Urban II were alive at the same time, from c. 1035 to 1048.
Al-Biruni
11th-century Persian scholar and polymath
Born 4 September AD 973 · died 9 December 1048, aged 75
Yes. Al-Biruni and Urban II were alive at the same time, from c. 1035 to 1048.
11th-century Persian scholar and polymath
Born 4 September AD 973 · died 9 December 1048, aged 75