Sydney
Denver
Convert AEST to MST
Australian Eastern Standard Time to Mountain Standard Time — Denver is 16 hours behind Sydney
Quick Facts
Time Difference
-16 hours
AEST Full Name
Australian Eastern Standard Time
MST Full Name
Mountain Standard Time
AEST to MST Conversion Table
Related Conversions
About AEST and MST Time Zones
AEST (Australian Eastern Standard Time) is UTC+10 and covers cities like Sydney, Melbourne, Brisbane. MST (Mountain Standard Time) is UTC-7 and covers cities like Denver, Phoenix, Salt Lake City.
When it's 12:00 PM (noon) in Sydney (AEST), it's 8:00 PM in Denver (MST). The time difference between AEST and MST is 16 hours — Denver is behind Sydney.
With a 17-hour gap, scheduling overlap is very limited. Early morning in Sydney (6–8 AM) corresponds to evening or late night in Denver.
Daylight Saving Time
AEST observes Daylight Saving Time and becomes AEDT (Australian Eastern Daylight Time) during summer months, shifting clocks forward by 1 hour to UTC+11.
MST observes Daylight Saving Time and becomes MDT (Mountain Daylight Time) during summer months, shifting clocks forward by 1 hour to UTC-6.
During DST transitions, the time difference between AEST and MST may shift by ±1 hour. Always verify the current offset above for the most accurate conversion.
Use our world clock tool to compare Sydney and Denver with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between AEST and MST?
Denver (MST) is 16 hours behind Sydney (AEST). The offset is -16 hours.
Is MST ahead or behind AEST?
MST is 16 hours behind AEST. AEST is UTC+10 and MST is UTC-6.
When it's 12:00 PM in Sydney, what time is it in Denver?
When it's 12:00 PM (noon) in Sydney (AEST), it's 8:00 PM in Denver (MST).
When it's 5:00 PM in Sydney, what time is it in Denver?
When it's 5:00 PM in Sydney (AEST), it's 1:00 AM in Denver (MST).
Does AEST change for Daylight Saving Time?
Yes. AEST (Australian Eastern Standard Time, UTC+10) becomes AEDT (Australian Eastern Daylight Time, UTC+11) in summer, shifting clocks forward 1 hour.
Does MST change for Daylight Saving Time?
Yes. MST (Mountain Standard Time, UTC-7) becomes MDT (Mountain Daylight Time, UTC-6) in summer, shifting clocks forward 1 hour.