AST to SGT Converter

Converting Atlantic Standard Time to Singapore Time

Atlantic Standard Time (AST) and Singapore Time (SGT) are separated by a 12 hours time difference. SGT is 12 hours ahead of AST. AST is UTC-4, used in Canada, Puerto Rico, US Virgin Islands, while SGT is UTC+8, used in Singapore.

When converting from AST to SGT, the key reference points to remember are: 9:00 AM AST equals 9:00 PM SGT, 12:00 PM noon AST equals 12:00 AM SGT, and 5:00 PM AST equals 5:00 AM SGT. The conversion table above shows every hour of the day mapped between these two time zones.

Scheduling Across AST and SGT

For professionals scheduling meetings between AST and SGT, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 12 hours difference, the window of overlap may be limited, making early morning or late evening calls necessary for one party. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.

Daylight Saving Time Considerations

AST observes Daylight Saving Time, switching to ADT (UTC-3) during summer months. SGT does not observe DST, staying at UTC+8 year-round. During DST transitions, the time difference between these zones may temporarily change by 1 hour. Always verify the current offset during spring and fall transition periods.