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Singapore vs London Time Difference
Singapore runs seven to eight hours ahead of London — close enough that Singapore's market close and London's market open function almost as a relay handoff rather than a shared window.
Singapore
Asia/Singapore
London
Europe/London
Calculating the live gap…
A relay, not an overlap
Some city pairs on this site share hours of simultaneous daytime; others, like Los Angeles and Tokyo, share none at all. Singapore and London do something in between: a handoff. The Singapore Exchange's trading day is winding down for the afternoon right around the time the London Stock Exchange is opening for the morning, so rather than both markets being live together for hours, one closes almost exactly as the other opens — a relay baton passed from Asia to Europe as the trading day rolls westward around the globe.
Why Singapore fixed its clock in 1982
Singapore didn't always sit at UTC+8. Until 1982 it ran on UTC+7:30, closer to its geographic longitude, before the government moved the national clock forward by half an hour specifically to align with major regional trading partners including Hong Kong and Beijing. That deliberate, business-motivated adjustment is part of why Singapore's time zone today functions less as a reflection of its geography and more as a tool for regional financial coordination — the same logic that makes it a natural relay point toward London.
Best time to call, hour by hour
The table below runs through a full Singapore day and shows the matching London time for each hour, with the rows where both cities fall inside a typical 9:00–17:00 workday highlighted.
| Singapore time | London time | Both in business hours? |
|---|---|---|
| Calculating… | ||
The highlighted window is thin, and that's the point — Singapore and London are built more for a relay handoff than a shared meeting slot. Singapore's late afternoon meeting London's early morning is usually the best compromise.
How we calculate this page: both live clocks, the current gap, the DST transition dates, and the hour-by-hour overlap table are all computed directly from the IANA Asia/Singapore and Europe/London time zone data via your browser on every page load — nothing here is a fixed, hard-coded figure.
Frequently asked questions
What is the time difference between Singapore and London?
Eight hours during London's winter (GMT) and seven hours during its summer (British Summer Time), with Singapore ahead. Singapore's own clock never changes.
Does Singapore observe daylight saving time?
No. Singapore has held a fixed UTC+8 offset since 1982, when it shifted from UTC+7:30 specifically to align its clock with regional trading partners like Hong Kong and Beijing.
Do Singapore and London share any standard business-hours overlap?
Barely any under a strict 9-to-5 definition, but the two markets effectively hand off to each other: the Singapore Exchange's trading day is wrapping up right around when the London Stock Exchange is opening, making this more of a back-to-back relay than an overlapping window.
What is the best time to schedule a call between Singapore and London?
Singapore's late afternoon lines up with London's early morning — roughly 4:00 to 6:00 p.m. in Singapore is 8:00 to 10:00 a.m. in London during most of the year, which is the closest thing to a shared window this pairing has.
Why is Singapore considered a bridge between Asian and European markets?
Singapore's fixed UTC+8 offset places its trading day just ahead of Hong Kong's and gives it a late-afternoon window that connects into London's market open, positioning it as the natural handoff point where Asian trading activity passes toward Europe as the day rolls westward.
How do I convert Singapore time to London time?
Subtract seven hours (during British Summer Time) or eight hours (during GMT) from Singapore time. For a guaranteed-accurate conversion on any specific date, use the time zone converter on WatchTime Online.
Need a different pairing? Try the meeting planner or see all cities on the world clock.