Sydney to Honolulu Time
AEST to HST Converter — 9 AM AEST is 1:00 PM HST
Sydney is 20 hours ahead of Honolulu. Convert any time between Sydney (AEST/AEDT) and Honolulu (HST) instantly.
Sydney
Australia
Honolulu
United States
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Time Zone Comparison
Sydney to Honolulu Time Conversion Table
| Sydney (AEST) | Honolulu (HST) |
|---|---|
| 1:00 AM | 4:00 AM |
| 2:00 AM | 6:00 AM |
| 4:00 AM | 8:00 AM |
| 6:00 AM | 10:00 AM |
| 8:00 AM | 12:00 PM |
| 10:00 AM | 2:00 PM |
| 12:00 PM | 4:00 PM |
| 2:00 PM | 6:00 PM |
| 4:00 PM | 8:00 PM |
| 6:00 PM | 10:00 PM |
| 8:00 PM | 12:00 AM |
| 10:00 PM | 2:00 AM |
Sydney & Honolulu — 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. Honolulu (United States) is a global financial and tech hub, known for technology, finance, healthcare, and entertainment. With a 20-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 Honolulu
With Honolulu 20 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 Honolulu does not — it stays on HST year-round. This means the time difference between Sydney and Honolulu changes by 1 hour when Sydney switches clocks. During Australia's summer, the gap is 19–21 hours instead of the standard 20 hours. Mark DST transition dates on your calendar to avoid missed meetings.
AEST to HST — Quick Reference
AEST (AEST/AEDT) stands for the timezone used in Sydney, Australia (UTC+10). HST (HST) is the timezone used in Honolulu, United States (UTC-10). Sydney is 20 hours ahead of Honolulu.
To convert AEST to HST, subtract 20 hours from AEST time. For example, AEST 9:00 AM = HST 1:00 PM (previous day).
Key Facts
- •Time difference: Sydney (UTC+10) is 20 hours ahead of Honolulu (UTC-10).
- •Daylight Saving Time: Sydney observes DST (AEST/AEDT). Honolulu does not observe DST (HST).
- •Regions: Sydney is located in Australia and uses the AEST/AEDT time zone. Honolulu is located in United States and uses the HST 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 Honolulu?
Sydney is 20 hours ahead of Honolulu.
What time is it in Honolulu when it's 9 AM in Sydney?
When it's 9:00 AM in Sydney, it is 1:00 PM in Honolulu (previous day).
What time is 9 PM AEST in HST?
9 PM AEST (Sydney time) is 1:00 AM HST (Honolulu 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 Honolulu?
There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
How do I convert AEST to HST?
AEST (AEST/AEDT) is the timezone for Sydney, Australia (UTC+10). HST (HST) is the timezone for Honolulu, United States (UTC-10). Sydney is 20 hours ahead of Honolulu. Quick examples: 9 AM AEST = 1:00 PM HST, 12 PM AEST = 4:00 PM HST, 3 PM AEST = 7:00 PM HST, 6 PM AEST = 10:00 PM HST.
Is Sydney ahead of or behind Honolulu?
Sydney is 20 hours ahead of Honolulu. When it's noon in Sydney, it's 4:00 PM in Honolulu (previous day).
Does Sydney or Honolulu change clocks for Daylight Saving Time?
Yes, Sydney observes DST and switches between AEST/AEDT. Honolulu does not observe DST — it stays on HST 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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