AEST to MST converter

Australian Eastern Time (AEST) is UTC+10 and observes daylight saving (AEDT, UTC+11, roughly October–April). It covers Sydney, Melbourne and Canberra.

Mountain Time (MST) is UTC−7 and observes daylight saving (MDT, UTC−6, roughly March–November). It covers Denver, Salt Lake City and Calgary.

Mountain Time is typically 17 hours behind Australian Eastern Time, though daylight saving can shift the difference by an hour at some times of year.

Best time to call Mountain Time from Australian Eastern Time

There's no 9-to-5 overlap between Australian Eastern Time and Mountain Time — one side always has to flex. The practical slots: 9:00 AM in Australian Eastern Time is 4:00 PM in Mountain Time. Daylight saving can shift these times by an hour at some points in the year.