What do Ibn al-Shatir and Ibn Tufail have in common?
Ibn al-Shatir Ibn al-Shatir or Ibn ash-Shatir (Arabic: ابن الشاطر‎ ‎ ; 1304–1375) was an Arab astronomer. He worked as "muwaqqit" (موقت, religious timekeeper) in the Umayyad Mosque in Damascus and constructed a sundial for its minaret in 1371/72.
Expedition of At-Tufail ibn 'Amr Ad-Dausi The expedition of At-Tufail ibn 'Amr Ad-Dausi, to Dhul-Kaffain to destroy the idol Yaguth took place in January 630 AD, 8AH, 9th month of the Islamic Calendar.