Best Time to Call Singapore from London
🕐 Live Timezone Overlap: Singapore & London
Singapore and London sit 7 hours apart, which makes scheduling a live call genuinely awkward. Singapore runs 9am to 6pm without deviation, and London does the same in principle, yet those two windows only coincide for 2 hours each day. That slim corridor, 4pm to 6pm Singapore time and 9am to 11am London time, is the entire working overlap both teams have to share. Plan around it early, or most of the coordination defaults to asynchronous messages.
Time Difference: Singapore and London
London is currently 7 hours behind Singapore. The live offsets are Singapore UTC+8 and London UTC+1. Singapore does not observe daylight saving and London observes daylight saving, so the offset shifts twice a year if both sides aren't already aligned.
Singapore holds a fixed UTC+8 year-round and does not observe daylight saving time. London currently sits at UTC+1 during British Summer Time, making the gap 7 hours right now. Come autumn, when UK clocks fall back to UTC+0, the gap widens to 8 hours, shrinking the already tight overlap further. That shift happens twice a year, so anyone scheduling recurring Singapore to London calls should check the London clock change dates and adjust standing invites accordingly.
Best Times to Meet
The 2-hour overlap runs from 9am to 11am in London and 4pm to 6pm in Singapore. Inside that 2-hour window, the cleanest slot is typically 9am to 10am London time (4pm to 5pm Singapore time). This keeps London callers fresh at the start of their day and catches Singapore participants before they begin wrapping up. One caveat: London office culture notes that lunch runs roughly 12:30 to 1:30pm, so a mid-morning start causes no conflict there. In Singapore, 9am to 6pm is the firm working norm, so 4pm is well within bounds.
Working Hours Overlap Explained
Singapore operates on Asia/Singapore (currently UTC+8). London operates on Europe/London (currently UTC+1). The table below maps a standard 9:00 AM–6:00 PM day in Singapore to London's local time.
| Singapore time | London time | Status |
|---|---|---|
| 9:00 AM | 2:00 AM | London outside hours |
| 10:00 AM | 3:00 AM | London outside hours |
| 11:00 AM | 4:00 AM | London outside hours |
| 12:00 PM | 5:00 AM | London outside hours |
| 1:00 PM | 6:00 AM | London outside hours |
| 2:00 PM | 7:00 AM | London outside hours |
| 3:00 PM | 8:00 AM | London just starting |
| 4:00 PM | 9:00 AM | London in business hours |
| 5:00 PM | 10:00 AM | London in business hours |
| 6:00 PM | 11:00 AM | London in business hours |
Tips for Scheduling Across Singapore and London
- Book the 9am to 10am London slot first. It falls neatly within Singapore's 4pm to 6pm overlap window.
- When UK clocks return to UTC+0 each autumn, the gap widens to 8 hours. Update recurring invites before that date.
- Singapore observes Chinese New Year across two public holidays in January or February. Clear those dates early in Q1 planning.
- London's May Bank Holiday falls on the first Monday in May. Singapore has no equivalent, so London will be unavailable that day.
- Singapore runs UTC+8 year-round. Unlike London, it never shifts, so the variable in this pair is always the London clock.
Public Holidays and Working Weeks
Both cities follow a standard Monday to Friday working week, with 9am to 6pm as the working day in each. Key dates to watch include Chinese New Year in January or February, when Singapore typically sees two public holidays plus extended absences, and the UK's May Bank Holiday, observed on the first Monday in May. Christmas Day on 25 December closes London offices too. Any cross-city meeting schedule should account for both calendars to avoid sending invites into a holiday.