Greenwich Mean Time (gmt) is used in United Kingdom. The IANA timezone identifier is Europe/London.

Singapore Time (sgt) is used in Singapore. The IANA timezone identifier is Asia/Singapore.

GMT to SGT Time Converter

Greenwich Mean Time → Singapore Time

GMT = UTC+1SGT = UTC+8

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

SGT (Singapore)

Singapore · +7h

16:00

New York

USA · -5h

04:00

Tokyo

Japan · +8h

17:00

Dubai

United Arab Emirates · +3h

12:00

Sydney

Australia · +9h

18:00

Time difference: GMT (London) and SGT (Singapore)

GMT (London) is 7 hours behind SGT (Singapore). When GMT (London) clocks hit noon, SGT (Singapore) reads 19:00.

GMT (London) is in the Europe/London timezone. SGT (Singapore) is in Asia/Singapore. The difference is 7 hours.

Business hours comparison

Every working day, GMT (London) and SGT (Singapore) are both in business hours for 1 hour simultaneously.

00:0006:0012:0018:0024:00

GMT (London)

SGT (Singapore)

Overlap (1h)

When to schedule across time zones

Both GMT (London) and SGT (Singapore) are in standard hours simultaneously for 1h per day.

09:00 London / 16:00 Singapore✓ Both working

Based on standard 09:00–17:00 working hours in each location's local time.

Holiday calendar for both locations

⚡ Both locations have upcoming holidays, check availability before scheduling.

GMT (London)7 holidays

Jun 15World Cup Bank HolidaySOON

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

SGT (Singapore)3 holidays

Aug 10National Day

Nov 9Deepavali

Dec 25Christmas Day

Working across GMT (London) and SGT (Singapore)

Working across GMT (London) (United Kingdom) and SGT (Singapore) (Singapore) involves a 7-hour gap. The good news: there is a 1-hour mutual window in standard business hours that lets both sides collaborate without anyone joining at an unreasonable hour.

💡 Best practice for cross-timezone meetings

✅

09:00–10:00 in GMT (London) = 16:00–17:00 in SGT (Singapore). Both sides are in standard business hours during this window.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in GMT (London). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

GMT (London) ↔ SGT (Singapore)

1h of business hours overlap daily (09:00–17:00)

GMT (London)

SGT (Singapore)

00:00

07:00

01:00

08:00

02:00

09:00Working

03:00

10:00Working

04:00

11:00Working

05:00

12:00Working

06:00

13:00Working

07:00

14:00Working

08:00

15:00Working

09:00Working

16:00Working

10:00Working

17:00off

11:00Working

18:00off

12:00Working

19:00off

13:00Working

20:00off

14:00Working

21:00off

15:00Working

22:00off

16:00Working

23:00off

17:00

00:00+1d

18:00

01:00+1d

19:00

02:00+1d

20:00

03:00+1d

21:00

04:00+1d

22:00

05:00+1d

23:00

06:00+1d

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between gmt and sgt?

Greenwich Mean Time (gmt) is UTC+1 and Singapore Time (sgt) is UTC+8. The difference between them is 7 hours.

Where is gmt used?

Greenwich Mean Time (gmt) is used in United Kingdom and surrounding regions. The IANA timezone identifier is Europe/London.

Where is sgt used?

Singapore Time (sgt) is used in Singapore and surrounding regions. The IANA timezone identifier is Asia/Singapore.

How do I convert gmt to sgt?

Use the interactive converter above. Drag the time slider to any gmt time and the sgt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular GMT conversions

GMT → New York GMT → Tokyo GMT → Dubai GMT → Sydney GMT → Paris GMT → Berlin GMT → Singapore GMT → Los Angeles GMT → Toronto GMT → Mumbai

Popular SGT conversions

London → SGT New York → SGT Tokyo → SGT Dubai → SGT Sydney → SGT Paris → SGT Berlin → SGT Los Angeles → SGT Toronto → SGT Mumbai → SGT