What is 8 AM AEDT in MST?
8 AM AEDT = 3:00 PM MST (15:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
Timezone converter
AEDT to MST currently uses Australian Eastern Time in Australia/Sydney and Mountain Time in America/Phoenix as the live reference pair, with a -17h live gap. AEDT to MST matters whenever Sydney and Phoenix need to coordinate across a -17h gap. The AEDT side covers Australia, while MST covers United States and Mexico — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.
Last updated Apr 27, 2026. Offset math, DST behavior, and city coverage on both sides are refreshed from the live timezone dataset during the page revalidation window.
From
Australian Eastern Time
Australia/Sydney · GMT+10 +10:00
Major markets in this grouping include Sydney, Brisbane, Gold Coast, Newcastle.
To
Mountain Time
America/Phoenix · MST -07:00
Major markets in this grouping include Phoenix, Ciudad Juárez, Calgary, Edmonton.
Current gap
-17h
AEDT +10:00 vs MST -07:00
9-to-5 overlap
1h
AEDT 9:00 AM to 10:00 AM
Representative countries
Australia / United States, Mexico, and Canada
Based on the busiest city and zone usage found in the current dataset.
AEDT (Sydney, +10:00) to MST (Phoenix, -07:00) is currently a -17h conversion. Live coverage on the AEDT side is anchored by Sydney, Brisbane, Gold Coast, and Newcastle; the MST side draws from Phoenix, Ciudad Juárez, Calgary, and Edmonton.
AEDT to MST matters whenever Sydney and Phoenix need to coordinate across a -17h gap. The AEDT side covers Australia, while MST covers United States and Mexico — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.
The pair spans roughly half the globe with a -17h gap, so the overlap window is narrow and most coordination happens through scheduled handoffs rather than live meetings.
AEDT follows seasonal clock changes through Australia/Sydney, while MST stays on a fixed offset year-round. That asymmetry is the real differentiator on this page: the gap widens or narrows by an hour twice a year, so calendar invites scheduled in one season often look wrong in the other.
AEDT and MST sit exactly 17h apart, leaving roughly 1h of usable 9-to-5 overlap. That window is tight enough that recurring meetings tend to pile onto the same hour, which is why teams with this pair often consolidate cross-region work into a single anchor meeting per day.
AEDT coverage on this page is led by Sydney, Australia, Brisbane, Australia, Gold Coast, Australia, and Newcastle, Australia, with 2 more in the live dataset. That mix is what makes AEDT feel anchored to Oceania and Pacific business activity in practice rather than just an abbreviation on a chart.
MST coverage is led by Phoenix, United States, Ciudad Juárez, Mexico, Calgary, Canada, and Edmonton, Canada, with 2 more anchoring the wider label family. Combined with the AEDT side, this conversion ends up describing trans-Pacific outsourcing handoffs, gaming and entertainment release windows, and follow-the-sun engineering rotations.
Adjust the time — digits roll like an odometer. Swap button flips the zones.
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| AEDT | MST | Day relation |
|---|---|---|
| 9:00 AM | 4:00 PMSun, Apr 26 | previous day |
| 12:00 PM | 7:00 PMSun, Apr 26 | previous day |
| 3:00 PM | 10:00 PMSun, Apr 26 | previous day |
| 6:00 PM | 1:00 AMMon, Apr 27 | same day |
| 9:00 PM | 4:00 AMMon, Apr 27 | same day |
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| MST | AEDT | Day relation |
|---|---|---|
| 9:00 AM | 2:00 AMMon, Apr 27 | next day |
| 12:00 PM | 5:00 AMMon, Apr 27 | next day |
| 3:00 PM | 8:00 AMMon, Apr 27 | next day |
| 6:00 PM | 11:00 AMMon, Apr 27 | next day |
| 9:00 PM | 2:00 PMMon, Apr 27 | next day |
AEDT to MST ranges from AEDT 9:00 AM (which lands at MST 4:00 PM) through AEDT 9:00 PM (MST 4:00 AM). Most of those slots fall on a different calendar day on the MST side, which is why this direction always needs explicit dates in invites and ticket comments — the time alone is not enough.
MST to AEDT ranges from MST 9:00 AM (which lands at AEDT 2:00 AM) through MST 9:00 PM (AEDT 2:00 PM). Most of those slots fall on a different calendar day on the AEDT side, which is why this direction always needs explicit dates in invites and ticket comments — the time alone is not enough.
These direct answers are here for the exact-intent searches people actually use, like “10 AM AEDT to MST” or “4 PM AEDT in MST”.
8 AM AEDT = 3:00 PM MST (15:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
9 AM AEDT = 4:00 PM MST (16:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
10 AM AEDT = 5:00 PM MST (17:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
11 AM AEDT = 6:00 PM MST (18:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
12 PM AEDT = 7:00 PM MST (19:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
1 PM AEDT = 8:00 PM MST (20:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
2 PM AEDT = 9:00 PM MST (21:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
3 PM AEDT = 10:00 PM MST (22:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
4 PM AEDT = 11:00 PM MST (23:00). On today's live calendar that lands on Sun, Apr 26 in MST, which means the answer is a previous day conversion rather than a static offset lookup.
5 PM AEDT = 12:00 AM MST (00:00). On today's live calendar that lands on Mon, Apr 27 in MST, which means the answer is a same day conversion rather than a static offset lookup.
6 PM AEDT = 1:00 AM MST (01:00). On today's live calendar that lands on Mon, Apr 27 in MST, which means the answer is a same day conversion rather than a static offset lookup.
9 PM AEDT = 4:00 AM MST (04:00). On today's live calendar that lands on Mon, Apr 27 in MST, which means the answer is a same day conversion rather than a static offset lookup.
The live gap is -17h right now, based on Australia/Sydney at +10:00 and America/Phoenix at -07:00. Australia/Sydney changes offset on October 4, 2026, so the gap moves to -18h after that transition.
The most usable workday block right now is about 1 hours: AEDT 9:00 AM to 10:00 AM, which lines up with MST 4:00 PM previous day to 5:00 PM previous day.
Australia/Sydney
GMT+10 · +10:00
America/Phoenix
MST · -07:00
These are the busiest live references selected from the abbreviation families on this page.
| AEDT | MST |
|---|---|
| 10:00 | 17:00 |
| 11:00 | 18:00 |
| 12:00 | 19:00 |
| 13:00 | 20:00 |
| 14:00 | 21:00 |
| 15:00 | 22:00 |
| 16:00 | 23:00 |
| 17:00 | 00:00 |
| 18:00 | 01:00 |
| 19:00 | 02:00 |
| 20:00 | 03:00 |
| 21:00 | 04:00 |
| 22:00 | 05:00 |
| 23:00 | 06:00 |
| 00:00 | 07:00 |
| 01:00 | 08:00 |
| 02:00 | 09:00 |
| 03:00 | 10:00 |
| 04:00 | 11:00 |
| 05:00 | 12:00 |
| 06:00 | 13:00 |
| 07:00 | 14:00 |
| 08:00 | 15:00 |
| 09:00 | 16:00 |
Countries represented here include Australia.
Countries represented here include United States, Mexico, and Canada.
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