How to read it
Hong Kong and London, side by side
Each row is one city's day, half an hour to a square, lined up by the hours along the bottom.
- 1Filled: at the desk, 9:00 to 18:00 where that city is.
- 2Grey: up early, up late, or the weekend.
- 3Outline: asleep.
- 4Red band: your slot. Read straight down to see the same moment in every city.
- 5A marks the best time for everyone; B, when there is one, the next best.
The red band is the best time to call on Wed, 21 Oct 2026: 16:00–17:00 in Hong Kong, which is 09:00–10:00 in London.
Through the year
How the gap between Hong Kong and London moves
London is 7h behind Hong Kong today. Daylight saving moves it:
- London 7h behind Hong Kong
- London 8h behind Hong Kong
- Sun, 25 Oct 2026 London's clocks go back an hour. London is then 8h behind Hong Kong.
- Sun, 28 Mar 2027 London's clocks go forward an hour. London is then 7h behind Hong Kong.
Hour by hour
Hong Kong to London time, hour by hour
On a working day (Wed, 21 Oct 2026), with working hours of 9:00 to 18:00 in both cities.
- Hong Kong starts work 09:00 02:00 in London Asleep
- London starts work 09:00 16:00 in Hong Kong At desk
- Hong Kong finishes work 18:00 11:00 in London At desk
- London finishes work 18:00 01:00 Wed in Hong Kong Asleep
Show all 24 hours
| Hong Kong | London |
|---|---|
| 00:00 Asleep | 17:00 Tue At desk |
| 01:00 Asleep | 18:00 Tue Late |
| 02:00 Asleep | 19:00 Tue Late |
| 03:00 Asleep | 20:00 Tue Late |
| 04:00 Asleep | 21:00 Tue Late |
| 05:00 Asleep | 22:00 Tue Asleep |
| 06:00 Asleep | 23:00 Tue Asleep |
| 07:00 Early | 00:00 Asleep |
| 08:00 Early | 01:00 Asleep |
| 09:00 At desk | 02:00 Asleep |
| 10:00 At desk | 03:00 Asleep |
| 11:00 At desk | 04:00 Asleep |
| 12:00 At desk | 05:00 Asleep |
| 13:00 At desk | 06:00 Asleep |
| 14:00 At desk | 07:00 Early |
| 15:00 At desk | 08:00 Early |
| 16:00 At desk | 09:00 At desk |
| 17:00 At desk | 10:00 At desk |
| 18:00 Late | 11:00 At desk |
| 19:00 Late | 12:00 At desk |
| 20:00 Late | 13:00 At desk |
| 21:00 Late | 14:00 At desk |
| 22:00 Asleep | 15:00 At desk |
| 23:00 Asleep | 16:00 At desk |
Questions
Questions people ask
What is the time difference between Hong Kong and London?
London is 7h behind Hong Kong (as of Wed, 21 Oct 2026). That changes on Sun, 25 Oct 2026, when London's clocks go back: then London is 8h behind Hong Kong.
What is the best time for a call between Hong Kong and London?
On a working day, the best time for a call is 16:00–17:00 in Hong Kong (09:00–10:00 in London) until 24 Oct 2026 and from 28 Mar 2027, and 17:00–18:00 in Hong Kong (09:00–10:00 in London) from 25 Oct 2026 to 27 Mar 2027.
Does Hong Kong change its clocks?
No. Hong Kong stays on UTC+8 all year.
Does London change its clocks?
Yes. London moves its clocks back an hour on Sun, 25 Oct 2026, and forward an hour on Sun, 28 Mar 2027.
More city pairs
Compare more cities
Hong Kong and…
- Hong Kong and Mumbai
- Hong Kong and Delhi
- Hong Kong and Bengaluru
- Hong Kong and Dubai
- Hong Kong and Abu Dhabi
- Hong Kong and Riyadh
- Hong Kong and Doha
- Hong Kong and Singapore
- Hong Kong and Tokyo
- Hong Kong and Sydney
- Hong Kong and Paris
- Hong Kong and Berlin
- Hong Kong and Amsterdam
- Hong Kong and New York
- Hong Kong and Toronto
- Hong Kong and Chicago
- Hong Kong and Los Angeles
- Hong Kong and San Francisco
London and…
- London and Mumbai
- London and Delhi
- London and Bengaluru
- London and Dubai
- London and Abu Dhabi
- London and Riyadh
- London and Doha
- London and Singapore
- London and Tokyo
- London and Sydney
- London and Paris
- London and Berlin
- London and Amsterdam
- London and New York
- London and Toronto
- London and Chicago
- London and Los Angeles
- London and San Francisco
From the team behind 10:10
Running an event across time zones?
C4E has spent twenty years running conferences, dealer meets and offsites in more than 40 countries, with clients, speakers and crews in different time zones. 10:10 is one of the tools we built for our own shows. It is free, with no account and nothing upsold.