Singapore is 5 hours ahead of Riyadh. Riyadh uses Arabia Standard Time (AST, UTC+3) while Singapore uses Singapore Standard Time (SGT, UTC+8). When it's 12:00 PM in Riyadh, it's 5:00 PM in Singapore.
Neither Saudi Arabia nor Singapore observes daylight saving time, so the 5-hour difference remains constant throughout the year.
Best calling time: 6:00 AM - 12:00 PM Riyadh time. This corresponds to 11:00 AM - 5:00 PM in Singapore, covering Singaporean business hours.
Saudi Arabia and Singapore have growing economic ties, particularly in finance and investment. Singapore is a major financial hub that many Saudi companies use for Asian operations. Direct flights connect the cities in about 8 hours.