Convert 21 Dhuʾl-Qaʿdah 1450 AH to Gregorian

The death of Ibn al-Nafis, discoverer of the pulmonary circulation · 687 AH

The learned physician ʿAlaʾ al-Din Ibn al-Nafis — who described the pulmonary (lesser) circulation of the blood four centuries before the Europeans — died in Cairo, and endowed his house and books to the Mansuri hospital.

• Falls on Thursday, one of the days the Prophet ﷺ regularly kept a voluntary fast.
• Dhuʾl-Qaʿdah is one of the four sacred months whose sanctity God magnified.
• Day 21 of 30 in Dhuʾl-Qaʿdah 1450 AH — the final third of the month.

One of the four sacred months; pilgrims begin making their way toward the Holy Land