Ramadan 2023 in Saudi Arabia was expected to begin on March 22 or 23 and conclude April 20 or 21, contingent on official moonsighting.
Saudi Arabia follows the Umm al-Qura calendar for civil purposes but relies on physical crescent moon sighting (hilal) by the Supreme Court's designated committees to declare Ramadan's start and end. This can cause a one-day variation from astronomical predictions.
As Islam's birthplace and guardian of the Two Holy Mosques, Saudi Arabia implements comprehensive Ramadan regulations: shortened work hours (6 hrs public sector), restaurant closures during daylight, enhanced mosque programming, and massive iftar/suhoor logistics at Mecca and Medina.
Ramadan advances ~11 days annually in the Gregorian calendar. Consult official Saudi sources (MoIA, Supreme Court) or local embassies for confirmed dates each year.