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Time gap

Time differences

Time difference between London and Singapore

No office hour works for both on a typical weekday — the bars below show the closest.

 

 

 

  • Everyone at work
  • Work hours
  • Awake
  • Night
  • Weekend

Tap any column to see that moment in every city.

Different hours for each city
  • 7–8 hoursSingapore ahead of London
  • UTC / UTC+1London, January / July
  • UTC+8Singapore, January and July
  • 0 hours / 1 hourshared 9-to-5 time, January / July

How the gap moves through the year

Singapore is 7 hours ahead of London for about 7 months of the year.

Singapore is 8 hours ahead of London for about 5 months of the year.

From the last Sunday in March (when London moves forward), Singapore is 7 hours ahead of London.

From the last Sunday in October (when London falls back), Singapore is 8 hours ahead of London.

London moves its clocks forward one hour on the last Sunday in March at 1:00 am local time and back on the last Sunday in October at 2:00 am, switching between Greenwich Mean Time (UTC) and British Summer Time (UTC+1).

Singapore does not change its clocks: it stays on UTC+8 (Singapore Standard Time) all year.

Next clock change for this pair, as of when this page was built (2026-10-20): London falls back on Sun 25 October 2026.

Everything on this page also holds if you swap London for Birmingham, Dublin, Glasgow, Manchester or Lisbon, or Singapore for Shanghai, Beijing, Guangzhou, Shenzhen or Taipei — those cities follow exactly the same clock all year.

Working hours that overlap

In January, two 9-to-5 days never meet — not a single quarter-hour is inside working hours in both cities.

In July, a 9-to-5 day in both cities shares 1 hour: 9:00 am–10:00 am in London, which is 4:00 pm–5:00 pm in Singapore.

Stretching both days to 8:00–18:00 opens 2 hours (8:00 am–10:00 am in London). Beyond that, one side has to take an early-morning or evening call.

Across the week

At 9:00 on a Monday morning in London, it is 5:00 pm on Monday in Singapore.

1 hour of a London working week (Monday to Friday, 9 to 5) fall on the weekend in Singapore, so part of Monday or Friday is lost for meetings.

Daylight, distance and night calls

London and Singapore are about 10,860 km (6,750 miles) apart and 104° of longitude apart, which by the sun alone would be 7 hours.

London's winter clock sits within 2 minutes of the sun, and Singapore's runs 1 hour 5 minutes ahead of the sun.

In mid-January the sun is up in London from about 7:59 am to 4:19 pm, and the sun is up in Singapore from about 7:12 am to 7:15 pm; both cities are in daylight at the same time for about 3 hours 15 minutes.

In mid-July the sun is up in London from about 5:00 am to 9:12 pm, and the sun is up in Singapore from about 7:05 am to 7:16 pm; both cities are in daylight at the same time for about 7 hours 15 minutes.

In January, 3 hours of a London office day fall in Singapore's night (10 pm to 6 am), and 5 hours of a Singapore office day fall in London's night.

In July, 2 hours of a London office day fall in Singapore's night (10 pm to 6 am), and 4 hours of a Singapore office day fall in London's night.

Hour-by-hour table and common mistakes — 2 more sections
Each hour in London and the same moment in Singapore, on a Wednesday in January and in July. Shaded: inside 9-to-5 in both.
LondonSingapore, JanuarySingapore, July
12:00 am8:00 am7:00 am
1:00 am9:00 am8:00 am
2:00 am10:00 am9:00 am
3:00 am11:00 am10:00 am
4:00 am12:00 pm11:00 am
5:00 am1:00 pm12:00 pm
6:00 am2:00 pm1:00 pm
7:00 am3:00 pm2:00 pm
8:00 am4:00 pm3:00 pm
9:00 am5:00 pm4:00 pm
10:00 am6:00 pm5:00 pm
11:00 am7:00 pm6:00 pm
12:00 pm8:00 pm7:00 pm
1:00 pm9:00 pm8:00 pm
2:00 pm10:00 pm9:00 pm
3:00 pm11:00 pm10:00 pm
4:00 pm12:00 am (+1 day)11:00 pm
5:00 pm1:00 am (+1 day)12:00 am (+1 day)
6:00 pm2:00 am (+1 day)1:00 am (+1 day)
7:00 pm3:00 am (+1 day)2:00 am (+1 day)
8:00 pm4:00 am (+1 day)3:00 am (+1 day)
9:00 pm5:00 am (+1 day)4:00 am (+1 day)
10:00 pm6:00 am (+1 day)5:00 am (+1 day)
11:00 pm7:00 am (+1 day)6:00 am (+1 day)

Common mistakes with London and Singapore

  • Forgetting that the gap changes even though Singapore never touches its clocks: London does, so a meeting fixed in Singapore time moves by an hour for people in London.
  • Writing “GMT” all year for London. In summer the zone is British Summer Time; calendar apps handle it, but a typed time in an email can be read the wrong way.

Questions

Is Singapore ahead of London?
Singapore is 8 hours ahead of London in January and 7 hours ahead of London in July.
What is a good time for a meeting between London and Singapore?
With 9-to-5 days in both cities, 9:00 am–10:00 am London time is inside working hours in both, which gives 1 hour. The window can shift by an hour in the weeks when only one city has changed its clocks.
Does the time difference between London and Singapore change?
Yes. Singapore is 7 hours ahead of London for about 7 months of the year. Singapore is 8 hours ahead of London for about 5 months of the year.

Related time differences

London time zone · Singapore time zone · Plan with more cities

City names, coordinates and time zone assignments: GeoNames, licensed under CC BY 4.0 (selection and renaming of some cities by this site). Clock times are computed in your browser from the IANA time zone database. Sources and limits.