AEST to MDT Converter
Eastern Australia is on daylight saving time: AEDT (UTC+11) until Sun, Apr 4, 2027.
Queensland stays on AEST (UTC+10).
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
10:00 pm22:00 AEST (UTC+10), Oct 18, 2026 = 6:00 am06:00 MDT (UTC-6), Oct 18, 2026
AEST is 16 hours ahead of MDT.
AEST and MDT examples
These examples always use AEST (UTC+10) and MDT (UTC-6). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
AEST is 16 hours ahead of MDT.
How the time difference changes
For most of the year, AEST is 16 hours ahead of MDT. From Nov 1, 2026 to Mar 14, 2027, AEST is 17 hours ahead of MST.
For most of the year, working hours of 9:00 am to 6:00 pm in AEST correspond to 5:00 pm (previous day) to 2:00 am in MDT. At other times of the year, working hours of 9:00 am to 6:00 pm in AEST correspond to 4:00 pm (previous day) to 1:00 am in MST.For most of the year, working hours of 09:00 to 18:00 in AEST correspond to 17:00 (previous day) to 02:00 in MDT. At other times of the year, working hours of 09:00 to 18:00 in AEST correspond to 16:00 (previous day) to 01:00 in MST.
Compare AEST time with MDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Australian Eastern Standard Time is 16 hours ahead of Mountain Daylight Time.
10:00 pm22:00 in AEST is 6:00 am06:00 in MDT
AEST to MDT call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in AEST which corresponds to 5pm-6pm17:00-18:00 in MDT (previous day)
10:00 pm22:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
10:00 pm22:00 AEST / 6:00 am06:00 MDT
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
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Australian Eastern Standard Time
Offset: AEST is 10 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Australia
Principal Cities: The largest city in the AEST time zone is Sydney in Australia, with about 5.639 million people. Other major cities in this time zone include Melbourne, Brisbane, Gold Coast, Newcastle.
Today the lighter areas are on UTC+11 (AEDT).
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Australian Eastern Daylight Time (AEDT).
End: Australian Eastern Standard Time (AEST) ended on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the first Sunday of October.
Start: Australian Eastern Standard Time (AEST) starts on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00. Standard time starts annually on the first Sunday of April.
See Australia daylight saving time and upcoming clock changes worldwide.
Australian Eastern Standard Time (AEST) is used in Queensland, Victoria, Tasmania, New South Wales (except Broken Hill), Australian Capital Territory and in folling major cities Brisbane, Sydney, Melbourne, Hobart, Canberra
Only part of Australia observe daylight saving. It is used in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Daylight saving is not observed in Queensland, Western Australia or the Northern Territory.
AEST representations, usage and related time zones
- +10 - basic short
- +1000 - basic
- +10:00 - extended
- +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the east of the zero meridian.
- Kilo - Military abbreviation for AEST
- K - short form of 'Kilo'
- Antarctica/Macquarie
- Australia/ACT
- Australia/Brisbane
- Australia/Canberra
- Australia/Currie
- Australia/Hobart
- Australia/Lindeman
- Australia/Melbourne
- Australia/NSW
- Australia/Queensland
- Australia/Sydney
- Australia/Tasmania
- Australia/Victoria
- AEST - Australian Eastern Standard Time
- CHUT - Chuuk Time
- ChST - Chamorro Standard Time
- K - Kilo Time Zone
- KDT - Korea Daylight Time
- PGT - Papua New Guinea Time
- VLAT - Vladivostok Time
- YAKST - Yakutsk Summer Time
- YAPT - Yap Time
Mountain Daylight Time
Offset: MDT is 6 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the MDT time zone is Ciudad Juárez in Mexico, with about 1.512 million people. Other major cities in this time zone include Denver, El Paso, Albuquerque, Colorado Springs.
French: HAR - Heure Avancée des Rocheuses
Spanish: MT - Zona Pacífico
Today all shaded areas are on MDT.
Daylight Saving: Mountain Daylight Time (MDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Mountain Standard Time (MST).
Start: Mountain Daylight Time (MDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.
End: Mountain Daylight Time (MDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.
See USA daylight saving time and upcoming clock changes worldwide.
MDT representations, usage and related time zones
- -06 - basic short
- -0600 - basic
- -06:00 - extended
- -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.
- Sierra - Military abbreviation for MDT
- S - short form of 'Sierra'
- America/Boise
- America/Cambridge_Bay
- America/Ciudad_Juarez
- America/Denver
- America/Edmonton
- America/Inuvik
- America/Shiprock
- America/Yellowknife
- Canada/Mountain
- MST7MDT
- Navajo
- US/Mountain
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra Time Zone