TIME ZONE CONVERTER
Hong Kong to Hanoi
Time Converter
Convert Hong Kong, Hong Kong SAR China to Hanoi, Vietnam. Compare dates, seasonal differences and meeting hours.
Hong Kong is 1h ahead of Hanoi in 2026.
9 AM Hong Kong = 8 AM Hanoi
Selected date: November 11, 2026.
THE QUICK REFERENCE
CSVHong Kong to Hanoi conversion table
November 11, 2026 · Date changes are marked.
View the full 24-hour table
| Hong Kong | Hanoi |
|---|---|
| 12:00 AM | 11:00 PM -1 day |
| 1:00 AM | 12:00 AM |
| 2:00 AM | 1:00 AM |
| 3:00 AM | 2:00 AM |
| 4:00 AM | 3:00 AM |
| 5:00 AM | 4:00 AM |
| 6:00 AM | 5:00 AM |
| 7:00 AM | 6:00 AM |
| 8:00 AM | 7:00 AM |
| 9:00 AM | 8:00 AM |
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| Hong Kong | Hanoi |
|---|---|
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 5:00 PM | 4:00 PM |
| 6:00 PM | 5:00 PM |
| 7:00 PM | 6:00 PM |
| 8:00 PM | 7:00 PM |
| 9:00 PM | 8:00 PM |
| 10:00 PM | 9:00 PM |
| 11:00 PM | 10:00 PM |
Starting with the Hanoi working day
These examples start on 2026-11-11 in Hanoi.
09:00 Hanoi10:00 →Hong Kong · 2026-11-11
17:00 Hanoi18:00 →Hong Kong · 2026-11-11
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 Hong Kong to Hanoi throughout 2026
09:00 in Hong Kong converts to 08:00 in Hanoi on every date in 2026. The destination has the same calendar date.
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does Hong Kong time become a different date in Hanoi?
Your complete source day: 2026-11-11. Each range shows which destination date to use.
Hong Kong · 2026-11-1100:00–01:00UTC+08:00
Hanoi · 2026-11-1023:00–24:00UTC+07:00 Previous day
Hong Kong · 2026-11-1101:00–24:00UTC+08:00
Hanoi · 2026-11-1100:00–23:00UTC+07:00 Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026Some things stay in sync.
The difference between Hong Kong and Hanoi stays the same throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
−1h
Neither selected clock changes its UTC offset during 2026.
CLOCK CHANGES
No upcoming clock adjustment
No clock change is published for either selected time zone in the next 400 days within our supported range.
PLAN BEYOND A SINGLE DAY
Daily CSVHong Kong–Hanoi working hours through 2026
Every date calculated with your working windows. 261 selected Hong Kong workdays; public holidays are not applied.
Least shared time7h
Most common7h
Most shared time7h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in Hong Kong 10:00–16:00.
These starts fit both working windows on every selected Hong Kong workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
Hong Kong: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. Hanoi: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
TWO PLACES. ONE CONNECTION.
≈ 872 km apartAcross the map. Across the clock.
THE DETAILS THAT MATTER
Hong Kong to Hanoi: useful answers
Does the Hong Kong–Hanoi time difference change in 2026?
The difference stays constant throughout 2026: Hanoi is 1h behind compared with Hong Kong.
Does this conversion change the calendar date?
09:00 in Hong Kong on 2026-11-11 is 08:00 in Hanoi on 2026-11-11. This selected time stays on the same date in both places. Other times can cross midnight.
Can Hong Kong and Hanoi meet during working hours?
Your selected working windows share 7h on 2026-11-11. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
Choose the question you need answered
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology