Sydney to Phoenix Time
AEST to MST Converter — 9 AM AEST is 4:00 PM MST
Sydney is 17 hours ahead of Phoenix. Convert any time between Sydney (AEST/AEDT) and Phoenix (MST) instantly.
Sydney
Australia
Phoenix
United States
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Time Zone Comparison
Sydney to Phoenix Time Conversion Table
| Sydney (AEST) | Phoenix (MST) |
|---|---|
| 1:00 AM | 7:00 AM |
| 2:00 AM | 9:00 AM |
| 4:00 AM | 11:00 AM |
| 6:00 AM | 1:00 PM |
| 8:00 AM | 3:00 PM |
| 10:00 AM | 5:00 PM |
| 12:00 PM | 7:00 PM |
| 2:00 PM | 9:00 PM |
| 4:00 PM | 11:00 PM |
| 6:00 PM | 1:00 AM |
| 8:00 PM | 3:00 AM |
| 10:00 PM | 5:00 AM |
Sydney & Phoenix — Business & Scheduling Guide
Sydney (Australia) is a stable, resource-rich economy in the Asia-Pacific region, with key industries in mining, agriculture, finance, and tourism. Phoenix (United States) is a global financial and tech hub, known for technology, finance, healthcare, and entertainment. With a 17-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Sydney and Phoenix
With Phoenix 17 hours behind Sydney, there is minimal overlap in standard business hours. Most teams alternate meeting times to share the burden of early-morning or late-evening calls fairly. Australian work culture values work-life balance, with typical hours of 9 AM–5 PM and flexible arrangements common. US business hours typically run 9 AM–5 PM, with a culture that values punctuality and efficiency. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.
Daylight Saving Time Considerations
Sydney observes Daylight Saving Time (AEST/AEDT), but Phoenix does not — it stays on MST year-round. This means the time difference between Sydney and Phoenix changes by 1 hour when Sydney switches clocks. During Australia's summer, the gap is 16–18 hours instead of the standard 17 hours. Mark DST transition dates on your calendar to avoid missed meetings.
AEST to MST — Quick Reference
AEST (AEST/AEDT) stands for the timezone used in Sydney, Australia (UTC+10). MST (MST) is the timezone used in Phoenix, United States (UTC-7). Sydney is 17 hours ahead of Phoenix.
To convert AEST to MST, subtract 17 hours from AEST time. For example, AEST 9:00 AM = MST 4:00 PM (previous day).
Key Facts
- •Time difference: Sydney (UTC+10) is 17 hours ahead of Phoenix (UTC-7).
- •Daylight Saving Time: Sydney observes DST (AEST/AEDT). Phoenix does not observe DST (MST).
- •Regions: Sydney is located in Australia and uses the AEST/AEDT time zone. Phoenix is located in United States and uses the MST time zone.
- •Best time to call: There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
Frequently Asked Questions
What is the time difference between Sydney and Phoenix?
Sydney is 17 hours ahead of Phoenix.
What time is it in Phoenix when it's 9 AM in Sydney?
When it's 9:00 AM in Sydney, it is 4:00 PM in Phoenix (previous day).
What time is 9 PM AEST in MST?
9 PM AEST (Sydney time) is 4:00 AM MST (Phoenix time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Sydney and Phoenix?
There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
How do I convert AEST to MST?
AEST (AEST/AEDT) is the timezone for Sydney, Australia (UTC+10). MST (MST) is the timezone for Phoenix, United States (UTC-7). Sydney is 17 hours ahead of Phoenix. Quick examples: 9 AM AEST = 4:00 PM MST, 12 PM AEST = 7:00 PM MST, 3 PM AEST = 10:00 PM MST, 6 PM AEST = 1:00 AM MST.
Is Sydney ahead of or behind Phoenix?
Sydney is 17 hours ahead of Phoenix. When it's noon in Sydney, it's 7:00 PM in Phoenix (previous day).
Does Sydney or Phoenix change clocks for Daylight Saving Time?
Yes, Sydney observes DST and switches between AEST/AEDT. Phoenix does not observe DST — it stays on MST year-round. Because only one city observes DST, the time difference shifts by 1 hour during transition periods (typically March/April and October/November).
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