AST to NZST Converter

Converting Atlantic Standard Time to New Zealand Standard Time

Atlantic Standard Time (AST) and New Zealand Standard Time (NZST) are separated by a 16 hours time difference. NZST is 16 hours ahead of AST. AST is UTC-4, used in Canada, Puerto Rico, US Virgin Islands, while NZST is UTC+12, used in New Zealand.

When converting from AST to NZST, the key reference points to remember are: 9:00 AM AST equals 1:00 AM NZST, 12:00 PM noon AST equals 4:00 AM NZST, and 5:00 PM AST equals 9:00 AM NZST. The conversion table above shows every hour of the day mapped between these two time zones.

Scheduling Across AST and NZST

For professionals scheduling meetings between AST and NZST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 16 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. NZST observes DST, switching to NZDT (UTC+13). 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.