Time difference
Hanoi to Sydney Time Difference
Sydney is 4 hours ahead of Hanoi — when it's 12:00 PM in Hanoi, it's 4:00 PM in Sydney. (Hanoi (Asia/Ho_Chi_Minh, GMT+7); Sydney (Australia/Sydney, AEDT).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Sydney is 4 hours ahead of Hanoi. The best window for a call is 9 AM–1 PM in Hanoi, which is 1 PM–5 PM in Sydney — a 4-hour overlap inside 9 AM–5 PM on both sides. Clocks change on April 4, 2027, which briefly shifts the gap between Hanoi and Sydney — the converter on this page always reflects the correct offset for the date you pick.
- When it's 9:00 AM in Hanoi, it's 1:00 PM in Sydney.
- When it's 9:00 AM in Sydney, it's 5:00 AM in Hanoi.
Sydney is currently 4 hours ahead of Hanoi.
Interactive converter
12:00PM
Select both cities to see the converted time.
Best times to meet
The 9 AM – 5 PM business windows in Hanoi and Sydney overlap for 4 hours. 9 AM–1 PM in Hanoi is 1 PM–5 PM in Sydney. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.
Quick conversion table
| Hanoi | Sydney |
|---|---|
| 12 AM | 4:00 AM |
| 1 AM | 5:00 AM |
| 2 AM | 6:00 AM |
| 3 AM | 7:00 AM |
| 4 AM | 8:00 AM |
| 5 AM | 9:00 AM |
| 6 AM | 10:00 AM |
| 7 AM | 11:00 AM |
| 8 AM | 12:00 PM |
| 9 AM | 1:00 PM |
| 10 AM | 2:00 PM |
| 11 AM | 3:00 PM |
| 12 PM | 4:00 PM |
| 1 PM | 5:00 PM |
| 2 PM | 6:00 PM |
| 3 PM | 7:00 PM |
| 4 PM | 8:00 PM |
| 5 PM | 9:00 PM |
| 6 PM | 10:00 PM |
| 7 PM | 11:00 PM |
| 8 PM | 12:00 AM (next day) |
| 9 PM | 1:00 AM (next day) |
| 10 PM | 2:00 AM (next day) |
| 11 PM | 3:00 AM (next day) |
Daylight saving
On April 4, 2027, Sydney shifts for daylight saving. After that, Sydney will be 3 hours ahead of Hanoi (currently 4 hours ahead of Hanoi). The converter and the tables above always reflect the correct offset for the date you pick.
- Hanoi does not observe daylight saving time.
- Sydney is currently observing daylight saving time.
Frequently asked questions
- Is Sydney ahead of or behind Hanoi?
- Sydney is 4 hours ahead of Hanoi.
- How many hours ahead of Hanoi is Sydney?
- Sydney is 4 hours ahead of Hanoi.
- What time is 9 AM in Hanoi in Sydney?
- 9:00 AM in Hanoi is 1:00 PM in Sydney.
- What time is noon in Hanoi in Sydney?
- 12:00 PM in Hanoi is 4:00 PM in Sydney.
- What time is 5 PM in Hanoi in Sydney?
- 5:00 PM in Hanoi is 9:00 PM in Sydney. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Hanoi in Sydney?
- 3:00 PM in Hanoi is 7:00 PM in Sydney.
- Is Hanoi currently observing daylight saving time?
- Hanoi does not observe daylight saving time — its UTC offset stays the same all year.
- Is Sydney currently observing daylight saving time?
- Sydney is currently observing daylight saving time (summer time).
- Do Hanoi and Sydney observe daylight saving?
- On April 4, 2027, Sydney shifts for daylight saving. After that, Sydney will be 3 hours ahead of Hanoi (currently 4 hours ahead of Hanoi). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Sydney from Hanoi?
- Aim for 9 AM–1 PM in Hanoi, which is 1 PM–5 PM in Sydney.
- When is the best time to call Hanoi from Sydney?
- Aim for 1 PM–5 PM in Sydney, which is 9 AM–1 PM in Hanoi.
- Hanoi (GMT+7) to Sydney (AEDT) — how do I convert quickly?
- Add 4 hours to Hanoi local time to get Sydney local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
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- Hanoi to London
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