AEST to AST-ATLANTIC Converter

Standard business hours (9 AM–5 PM, Mon–Fri) in Australian Eastern Time and Atlantic Time don't overlap on the same weekday. Atlantic Time is 13 hours behind Australian Eastern Time.

Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.

Australian Eastern Time is also known as AEST, or AEDT. To call Australia, dial +61.

Atlantic Time is also known as AST, or ADT. To call Canada, dial +1.

Atlantic Time is approximately 10,450 miles northeast of Australian Eastern Time.

Both zones observe daylight saving time, but they transition on different dates.

Australian Eastern Time: next transition on Sunday, October 4, 2026.

Atlantic Time: next transition on Sunday, November 1, 2026.

Australian Eastern Time and Atlantic Time are in opposite hemispheres, so their clocks change in opposite directions about six months apart — one springs forward while the other falls back. The offset between them therefore shifts twice a year and can swing by up to two hours across the seasons, more than a typical same-hemisphere pair. Recurring meetings will need re-checking after each transition.

See the daylight saving time page for transition dates across every time zone.