Live Synchronized Time Difference
Hong KongtoSydneyTime Difference
🇭🇰
Hong Kong
Hong Kong (GMT+8)23:10:21UTC+8:00
🇦🇺
Sydney
Australia (GMT+11)02:10:21UTC+11:00
Direct Distance7,376 km (4,583 miles)
Estimated Flight Time~9.2 hours
Business Overlap5 overlapping hours (9am–5pm)
Mutual Working Window: 5 Overlapping Hours
Recommended calling window between Hong Kong and Sydney
Off-Peak Calling Window
Hong Kong Time
9:00 AM – 2:00 PM
Sydney Time
12:00 PM – 5:00 PM
Both locations share 5 overlapping standard business hours (9:00 AM – 5:00 PM). This is the premier window for real-time video conferences, corporate calls, and instant collaboration without outside-hours disruption.
24-Hour Schedule Conversion Matrix
Compare every hour of the day between Hong Kong and Sydney.
Work (9am-5pm)ShoulderSleep / Off
| Hong Kong Time (Hong Kong) | Sydney Time (Australia) | Status & Recommendation |
|---|---|---|
| 00:00AM | 03:00AM | ⚪ Outside Work Hours |
| 01:00AM | 04:00AM | ⚪ Outside Work Hours |
| 02:00AM | 05:00AM | ⚪ Outside Work Hours |
| 03:00AM | 06:00AM | ⚪ Outside Work Hours |
| 04:00AM | 07:00AM | ⚪ Outside Work Hours |
| 05:00AM | 08:00AM | ⚪ Outside Work Hours |
| 06:00AM | 09:00AM | ⚪ Outside Work Hours |
| 07:00AM | 10:00AM | ⚪ Outside Work Hours |
| 08:00AM | 11:00AM | ⚪ Outside Work Hours |
| 09:00AM | 12:00PM | 🟢 Ideal Meeting Window |
| 10:00AM | 13:00PM | 🟢 Ideal Meeting Window |
| 11:00AM | 14:00PM | 🟢 Ideal Meeting Window |
| 12:00PM | 15:00PM | 🟢 Ideal Meeting Window |
| 13:00PM | 16:00PM | 🟢 Ideal Meeting Window |
| 14:00PM | 17:00PM | 🟡 Feasible (Shoulder Hour) |
| 15:00PM | 18:00PM | 🟡 Feasible (Shoulder Hour) |
| 16:00PM | 19:00PM | 🟡 Feasible (Shoulder Hour) |
| 17:00PM | 20:00PM | ⚪ Outside Work Hours |
| 18:00PM | 21:00PM | ⚪ Outside Work Hours |
| 19:00PM | 22:00PM | ⚪ Outside Work Hours |
| 20:00PM | 23:00PM | ⚪ Outside Work Hours |
| 21:00PM | 00:00AM | ⚪ Outside Work Hours |
| 22:00PM | 01:00AM | ⚪ Outside Work Hours |
| 23:00PM | 02:00AM | ⚪ Outside Work Hours |
Frequently Asked Questions
What is the time difference between Hong Kong and Sydney?
Sydney is 3 hours ahead of Hong Kong.
What is the best time to schedule a cross-border meeting between Hong Kong and Sydney?
There are 5 overlapping standard business hours (09:00 - 17:00) between Hong Kong and Sydney. The optimal window is when both parties are in their core working shifts.
Does daylight saving time (DST) affect the time difference between Hong Kong and Sydney?
Yes. If either Hong Kong or Australia observes seasonal Daylight Saving Time transitions, the offset difference shifts by one hour on scheduled transition dates.