London vs Singapore: The Current Time Difference
The gap depends entirely on whether London is observing Greenwich Mean Time (GMT) or British Summer Time (BST).
| Period | London Offset | Singapore Offset | Time Difference |
|---|---|---|---|
| Late October to late March (GMT) | UTC+0 | UTC+8 | London is 8 hours behind |
| Late March to late October (BST) | UTC+1 | UTC+8 | London is 7 hours behind |
Singapore never changes its clocks. That makes Singapore the anchor. London is the variable.
Singapore Time Stays Fixed at UTC+8
Singapore Time (SGT) is UTC+8 every day of the year. No daylight saving, no spring forward, no fall back. The island sits geographically west of its natural meridian and should logically be on UTC+7, but it shares its time zone with China Standard Time for historical and economic reasons.
When London switches, the calculation changes.
- During GMT (winter): London is 8 hours behind. 12:00 in London is 20:00 in Singapore.
- During BST (summer): London is 7 hours behind. 12:00 in London is 19:00 in Singapore.
The Early Morning Overlap: London AM, Singapore PM
The overlap happens in the early morning for London. A call at 07:00 to 09:00 London time catches late afternoon in Singapore, 15:00 to 17:00. That is the only reliable window where both cities are in their standard working day.
Calling from Singapore to London means dialling before your own lunch. A 15:00 Singapore call lands at 08:00 London during BST, or 07:00 during GMT. That works. A 17:00 Singapore call lands at 10:00 London during BST, still fine. A 19:00 call lands at 12:00, which works for a lunch meeting but risks the London worker being away from their desk.
What fails: calling Singapore from London at 14:00. That is 21:00 or 22:00 in Singapore. The working day is over.
London, Singapore Time Converter
The table shows the conversion at a glance.
| London Time (GMT) | Singapore Time | London Time (BST) | Singapore Time |
|---|---|---|---|
| 06:00 | 14:00 | 06:00 | 13:00 |
| 07:00 | 15:00 | 07:00 | 14:00 |
| 08:00 | 16:00 | 08:00 | 15:00 |
| 09:00 | 17:00 | 09:00 | 16:00 |
| 10:00 | 18:00 | 10:00 | 17:00 |
| 11:00 | 19:00 | 11:00 | 18:00 |
| 12:00 | 20:00 | 12:00 | 19:00 |
| 13:00 | 21:00 | 13:00 | 20:00 |
| 14:00 | 22:00 | 14:00 | 21:00 |
| 15:00 | 23:00 | 15:00 | 22:00 |
| 16:00 | 00:00 (next day) | 16:00 | 23:00 |
| 17:00 | 01:00 (next day) | 17:00 | 00:00 (next day) |
During BST, the Singapore clock is one hour earlier relative to London. A 16:00 London meeting that would be midnight in Singapore during winter is only 23:00 during summer. That extra hour can save a call from landing at midnight.
London moves to GMT on Sunday 25 October 2026 at 02:00 local time. After that, the difference widens to 8 hours again until March 2027.
For a recurring meeting, set it for 08:00 London time. That gives you 15:00 Singapore during BST and 16:00 during GMT, both within the standard working day for both cities.