GMT to SGT Converter & Meeting Planner
Quick answer: 9:00 AM GMT = 5:00 PM SGT (fixed +00:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Greenwich Mean Time (GMT) and Singapore Time (SGT)? You need to account for the standard time difference. Singapore Time is normally 8 hours ahead of Greenwich Mean Time. Whether you are coordinating between teams in London and Dublin and Singapore, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM GMT = 8:00 AM SGT. The full 24-hour GMT to SGT table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM GMT = 11:00 PM SGT.
| GMT Time | SGT Time |
|---|---|
| 12:00 AM (00:00) | 8:00 AM (08:00) |
| 1:00 AM (01:00) | 9:00 AM (09:00) |
| 2:00 AM (02:00) | 10:00 AM (10:00) |
| 3:00 AM (03:00) | 11:00 AM (11:00) |
| 4:00 AM (04:00) | 12:00 PM (12:00) |
| 5:00 AM (05:00) | 1:00 PM (13:00) |
| 6:00 AM (06:00) | 2:00 PM (14:00) |
| 7:00 AM (07:00) | 3:00 PM (15:00) |
| 8:00 AM (08:00) | 4:00 PM (16:00) |
| 9:00 AM (09:00) | 5:00 PM (17:00) |
| 10:00 AM (10:00) | 6:00 PM (18:00) |
| 11:00 AM (11:00) | 7:00 PM (19:00) |
| 12:00 PM (12:00) | 8:00 PM (20:00) |
| 1:00 PM (13:00) | 9:00 PM (21:00) |
| 2:00 PM (14:00) | 10:00 PM (22:00) |
| 3:00 PM (15:00) | 11:00 PM (23:00) |
| 4:00 PM (16:00) | 12:00 AM (00:00)+1 day |
| 5:00 PM (17:00) | 1:00 AM (01:00)+1 day |
| 6:00 PM (18:00) | 2:00 AM (02:00)+1 day |
| 7:00 PM (19:00) | 3:00 AM (03:00)+1 day |
| 8:00 PM (20:00) | 4:00 AM (04:00)+1 day |
| 9:00 PM (21:00) | 5:00 AM (05:00)+1 day |
| 10:00 PM (22:00) | 6:00 AM (06:00)+1 day |
| 11:00 PM (23:00) | 7:00 AM (07:00)+1 day |
Best time to call Singapore from London
For most work calls, compare the normal business day in London (GMT) with the business day in Singapore (SGT). GMT commonly covers Europe, Africa, while SGT is mainly associated with Southeast Asia, Asia-Pacific.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 9:00 AM - 11:00 AM GMT, which corresponds to 4:00 PM - 6:00 PM SGT. This window sits inside the typical GMT workday (9:00 AM - 5:00 PM) and the SGT workday (9:00 AM - 6:00 PM).
- DST Safety: GMT or SGT may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- London Stock Exchange: 08:00-16:30 local time in London.
- Singapore Exchange (SGX): 09:00-17:00 local time in Singapore.
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Frequently Asked Questions
What is the time difference between GMT and SGT?
During standard time, Singapore Time is 8 hours ahead of Greenwich Mean Time.
What is the difference between GMT and BST?
GMT (Greenwich Mean Time) is the UK's standard winter offset at UTC+0, observed from the last Sunday in October through the last Sunday in March. BST (British Summer Time) is the daylight saving offset at UTC+1, applied each summer when clocks advance one hour.
Is GMT the same as UTC?
GMT and UTC share exactly the same numerical offset — both represent UTC+00:00 — but they are fundamentally different in nature. UTC is an atomic-clock-based international time standard used as the global reference, while GMT is a geographic time zone legally observed by specific countries including the United Kingdom and Ireland during winter months.
Does Singapore use Daylight Saving Time?
Singapore does not observe Daylight Saving Time and has no policy to introduce it, remaining fixed at UTC+8:00 every day of the year. Singapore's location approximately one degree north of the equator means daylight hours remain nearly constant across the seasons, removing the original rationale for DST entirely.
Which other major countries share Singapore's time zone?
China, Hong Kong, Taiwan, Malaysia, and Western Australia all operate on the same UTC+8:00 offset as Singapore, though each uses its own regional designation — CST, HKT, CST, MYT, and AWST respectively. Collectively, the UTC+8 bloc represents one of the world's most economically significant time bands.