Time Difference: London and Singapore
Singapore is 8 hours ahead of London in winter and 7 hours ahead in summer. 9:00 AM in London is 5:00 PM in Singapore on GMT and 4:00 PM on BST.
Daylight saving note: Singapore never changes its clocks. It is 8 hours ahead of London on GMT and 7 hours ahead on BST, which runs from the last Sunday in March to the last Sunday in October.
Why London and Singapore Are Hard to Line Up
Singapore is UTC+8 all year. London is UTC+0 in winter and UTC+1 in summer, so Singapore leads by 8 hours in the cold months and 7 hours in the warm ones. The only moving part is the UK clock change.
A rule of thumb that works: take London's time, add 8 in winter or 7 in summer. 2:00 PM in London is 10:00 PM in Singapore on GMT and 9:00 PM on BST, so a London afternoon is already Singapore's late evening or night.
The date can flip as well. 5:00 PM in London is 1:00 AM the next day in Singapore in winter, which is the next calendar day, so anything you send at the end of the London day arrives on Singapore's tomorrow.
London to Singapore Conversion Table
Each column is one real season of the London-Singapore gap. Pick the column that matches your date.
| 🇬🇧 London (GMT) | 🇸🇬 Singapore (GMT → SGT) | 🇸🇬 Singapore (BST → SGT) |
|---|---|---|
| 00:00 | 08:00 | 07:00 |
| 03:00 | 11:00 | 10:00 |
| 06:00 | 14:00 | 13:00 |
| 09:00 | 17:00 | 16:00 |
| 12:00 | 20:00 | 19:00 |
| 15:00 | 23:00 | 22:00 |
| 18:00 | 02:00(next day) | 01:00(next day) |
| 21:00 | 05:00(next day) | 04:00(next day) |
- GMT → SGT: last Sunday in October to last Sunday in March, while the UK is on GMT
- BST → SGT: last Sunday in March to last Sunday in October, while the UK is on BST
* "next day" / "prev day" = the converted time falls on a different calendar date.
Best Meeting Time for London and Singapore
Two 9-to-5 days almost don't meet. On GMT the gap is 8 hours, so London's 9:00 AM start is Singapore's 5:00 PM close and there's no real overlap. On BST you get one hour: 9:00 to 10:00 AM in London is 4:00 PM to 5:00 PM in Singapore. In winter the practical fix is an early London start, with 8:00 to 9:00 AM there at 4:00 PM to 5:00 PM in Singapore.
Avoiding London-Singapore Time Mistakes
Singapore is ahead, so a late evening in London is already the next calendar day in Singapore. With a 8 hours gap, that starts at 4:00 PM in London: 4:30 PM there is 12:30 AM the next day in Singapore. When the gap narrows to 7 hours, the date line moves to 5:00 PM.
Singapore never changes, so a series stored in Singapore time drifts on London's calendar. A 4:00 PM Singapore call is 8:00 AM in London in winter and 9:00 AM in summer. Name the city and add both local times to the invite, especially in the weeks after each UK clock change.
A Worked Example: A Monthly Planning Call Between London and Singapore
Say a London team wants a monthly planning call with Singapore. A 9:00 AM London start is 5:00 PM in Singapore on GMT and 4:00 PM on BST. A 10:00 AM start is 6:00 PM on GMT and 5:00 PM on BST, which in winter is already past Singapore's close.
Starting earlier in the London day helps Singapore. 8:00 AM London is 4:00 PM in Singapore on GMT, with an hour left in the Singapore day.
If Singapore hosts at 3:00 PM, London joins at 7:00 AM on GMT and 8:00 AM on BST. Because London's clocks move, a call fixed in Singapore time drifts on the London calendar in March and October.
Frequently Asked Questions
What is the time difference between London and Singapore?
Singapore is 8 hours ahead of London while the UK is on GMT and 7 hours ahead while it is on BST. Singapore doesn't change its clocks.
What time is 9 AM in London in Singapore?
On GMT, 9:00 AM in London is 5:00 PM in Singapore. On BST it's 4:00 PM. Both are in the late afternoon of the same day.
When does the London-Singapore difference change?
On the last Sunday in March, when the UK moves to BST and the gap narrows from 8 hours to 7, and on the last Sunday in October, when it widens back to 8. Singapore has no change.
What is the best time to schedule a London-Singapore call?
Early morning in London. On BST, 9:00 to 10:00 AM is 4:00 PM to 5:00 PM in Singapore. On GMT, 8:00 to 9:00 AM is 4:00 PM to 5:00 PM.