Quick answer
5 PM SGT is 9 AM GMT in London (winter). During UK summer (BST), 5 PM SGT is 10 AM BST. Singapore (UTC+8) does not observe daylight saving — the London time shifts only when the UK changes clocks in spring and autumn.
5 PM Singapore time to London: what to know
The London–Singapore gap is 8 hours in winter (GMT) and 7 hours in summer (BST). 5 PM Singapore reaches London at 9 AM GMT (winter) or 10 AM BST (summer). This is one of the most practical London–Singapore overlap windows: Singapore is ending the business day while London is just starting. Both sides are within normal working hours.
Singapore’s standard working hours are typically 9 AM–6 PM SGT, and London’s are 9 AM–5 PM GMT/BST. The natural overlap falls in the 9 AM–6 PM Singapore window, which maps to 1 AM–10 AM London (GMT). The practical business-hours overlap for both is 8 AM–1 PM London / 4–9 PM Singapore. Use the London to Singapore planner for the live window.
What is 5 PM Singapore time in London?
5 PM SGT is 9 AM GMT in London (winter). During UK summer (BST), 5 PM SGT is 10 AM BST. Singapore (UTC+8) does not observe daylight saving, so the London time shifts only when the UK changes clocks.
Is 5 PM Singapore a good time for a London call?
Yes. 5 PM SGT = 9 AM GMT is one of the best Singapore–London windows: Singapore is closing the day, London is opening it. Both sides are within normal business hours for a joint call.
Why does the London time change for 5 PM SGT?
Singapore (SGT, UTC+8) never observes daylight saving. But the UK switches between GMT (UTC+0) in winter and BST (UTC+1) in summer, changing the conversion by one hour. In winter, 5 PM SGT = 9 AM GMT. In summer, 5 PM SGT = 10 AM BST.
What is 5 PM Singapore time in New York?
5 PM SGT is 4 AM EST in New York (winter) — too early for business calls. For Singapore to US East Coast scheduling, see the 9 AM EST in Singapore page for the US-perspective window.