London to Hong Kong Time Converter
Hong Kong is 8 hours ahead of London while the UK is on GMT, and 7 hours ahead during BST. 8:00 AM in London is 4:00 PM in Hong Kong on GMT and 3:00 PM on BST.
One Shared Hour, and Only in Summer
A London and Hong Kong workday barely meet. On GMT the 8-hour gap puts London's 9 AM start at Hong Kong's 5 PM finish, so there is no overlap on a strict 9-to-5 schedule. Once the UK is on BST you get one shared hour, 9:00 to 10:00 AM in London, which is 4:00 PM to 5:00 PM in Hong Kong. In winter the workable option is an early London start: 8:00 to 9:00 AM there is 4:00 PM to 5:00 PM in Hong Kong, its last hour of the day.
| London | Hong Kong |
|---|---|
| 8:00 AM–9:00 AM | 4:00 PM–5:00 PM |
| GMT → HKT: London: before 9 AM. Hong Kong: inside 9 AM–5 PM. Winter: London starts early so Hong Kong can finish at 5 PM. | |
| 9:00 AM–10:00 AM | 4:00 PM–5:00 PM |
| BST → HKT: Both inside 9 AM–5 PM Summer: the only hour where both 9-to-5 days overlap. | |
"Inside 9 AM–5 PM" is a planning assumption for a standard office day on each side, not a claim about any company's hours.
London Hours in Hong Kong Time
Full 24-hour reference table. Use the live clocks above for the exact current offset.
| 🇬🇧 GMT/BST | 🇭🇰 GMT → HKTUTC+0 to UTC+8, while the UK is on GMT | 🇭🇰 BST → HKTUTC+1 to UTC+8, while the UK is on BST |
|---|---|---|
| 00:00 | 8:00 AM | 7:00 AM |
| 01:00 | 9:00 AM | 8:00 AM |
| 02:00 | 10:00 AM | 9:00 AM |
| 03:00 | 11:00 AM | 10:00 AM |
| 04:00 | 12:00 PM | 11:00 AM |
| 05:00 | 1:00 PM | 12:00 PM |
| 06:00 | 2:00 PM | 1:00 PM |
| 07:00 | 3:00 PM | 2:00 PM |
| 08:00 | 4:00 PM | 3:00 PM |
| 09:00 | 5:00 PM | 4:00 PM |
| 10:00 | 6:00 PM | 5:00 PM |
| 11:00 | 7:00 PM | 6:00 PM |
| 12:00 | 8:00 PM | 7:00 PM |
| 13:00 | 9:00 PM | 8:00 PM |
| 14:00 | 10:00 PM | 9:00 PM |
| 15:00 | 11:00 PM | 10:00 PM |
| 16:00 | 12:00 AMnext day | 11:00 PM |
| 17:00 | 1:00 AMnext day | 12:00 AMnext day |
| 18:00 | 2:00 AMnext day | 1:00 AMnext day |
| 19:00 | 3:00 AMnext day | 2:00 AMnext day |
| 20:00 | 4:00 AMnext day | 3:00 AMnext day |
| 21:00 | 5:00 AMnext day | 4:00 AMnext day |
| 22:00 | 6:00 AMnext day | 5:00 AMnext day |
| 23:00 | 7:00 AMnext day | 6:00 AMnext day |
* "next day" = converted time falls on the following calendar day.
Why It Is 8 Hours, Then 7
Hong Kong uses HKT (UTC+8) all year and does not use daylight saving. London is on GMT (UTC+0) in winter and BST (UTC+1) in summer, switching on the last Sunday in March and the last Sunday in October, so the gap is 8 hours in winter and 7 hours in summer.
After the UK clocks go forward, a call held at the same Hong Kong time arrives an hour later on the London clock. 5:00 PM in Hong Kong is 9:00 AM in London in winter and 10:00 AM in summer; 9:00 AM in Hong Kong is 1:00 AM and 2:00 AM. In the weeks around the clock changes, write the city and the date in the invite.
Singapore is on the same UTC+8 offset, so a time converted for Hong Kong works for Singapore too. 7:00 AM in London is 3:00 PM in Hong Kong on GMT and 2:00 PM on BST.
Hour by Hour Across the London Day
Each row is an hour of the London day with the Hong Kong time next to it. Only one row gets a check mark, 9:00 AM on BST, because that is the single hour both cities are inside a 9-to-5 day.
| London | Hong Kong (GMT → HKT) | Hong Kong (BST → HKT) |
|---|---|---|
| 8:00 AM | 4:00 PM | 3:00 PM |
| 9:00 AM | 5:00 PM | 4:00 PM ✓ |
| 10:00 AM | 6:00 PM | 5:00 PM |
| 11:00 AM | 7:00 PM | 6:00 PM |
| 12:00 PM | 8:00 PM | 7:00 PM |
| 1:00 PM | 9:00 PM | 8:00 PM |
| 2:00 PM | 10:00 PM | 9:00 PM |
| 3:00 PM | 11:00 PM | 10:00 PM |
| 4:00 PM | 12:00 AMnext day | 11:00 PM |
| 5:00 PM | 1:00 AMnext day | 12:00 AMnext day |
| 6:00 PM | 2:00 AMnext day | 1:00 AMnext day |
Each row is an hour of the London day. A check mark means both cities are inside a 9 AM to 5 PM working day at that moment.
- GMT → HKT: no shared working hours.
- BST → HKT: 1 hour shared, 9:00 AM to 10:00 AM London time.