GST to SGT
+4hGST
GSTSOURCESGT
SGTGreen rows indicate typical business hours (9 AM - 5 PM)
GST and SGT on the World Map
The map below highlights the GST (Gulf Standard Time) and SGT (Singapore Standard Time) timezone regions across the globe.
GST – Gulf Standard Time
UTC+04:00Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.
- •Dubai uses GST year-round with no daylight saving time.
- •GST is 9 hours ahead of EST and 4 hours ahead of GMT.
- •The Dubai Financial Market (DFM) operates on GST.
SGT – Singapore Standard Time
UTC+08:00Singapore Standard Time (SGT) is the time zone for Singapore, 8 hours ahead of UTC.
- •Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00).
- •Singapore does not observe daylight saving time.
- •The Singapore Exchange (SGX) operates on SGT.
Understanding the +4h Gap: GST vs SGT
GST runs on Gulf Standard Time (GST) at UTC+04:00. SGT runs on Singapore Standard Time (SGT) at UTC+08:00. That puts GST 4 hours ahead of SGT — a difference of +4h at the current offsets.
In practice, when it is 9:00 AM in GST it is 1:00 PM in SGT. Midnight in GST is 4:00 AM in SGT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to SGT time conversion table
| GST (GST) | SGT (SGT) | Day |
|---|---|---|
| 12:00 AM | 4:00 AM | same day |
| 6:00 AM | 10:00 AM | same day |
| 7:00 AM | 11:00 AM | same day |
| 8:00 AM | 12:00 PM | same day |
| 9:00 AM | 1:00 PM | same day |
| 12:00 PM | 4:00 PM | same day |
| 3:00 PM | 7:00 PM | same day |
| 5:00 PM | 9:00 PM | same day |
| 6:00 PM | 10:00 PM | same day |
| 9:00 PM | 1:00 AM | next day |
Why people convert GST to SGT time
- Scheduling a call from GST to SGT: a 10:00 AM start in GST lands at 2:00 PM in SGT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both GST and SGT are inside the 9-to-5 working day between 9:00 AM and 1:00 PM GST time (1:00 PM–5:00 PM SGT). That is roughly 4 hours of usable overlap.
- Booking travel or deliveries: tracking SGT local time against GST keeps pickup windows and arrival estimates honest across the +4h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM GST" is unambiguous; "3 PM" across a +4h gap is not.
- Block 9:00 AM–1:00 PM GST as the recurring meeting window if you work primarily from GST and need SGT colleagues present.
About GST (Gulf Standard Time)
Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.
About SGT (Singapore Standard Time)
Singapore Standard Time (SGT) is used in Singapore year-round. Singapore does not observe daylight saving time. Despite being geographically close to the UTC+07:00 zone, Singapore uses UTC+08:00 to align with major trading partners like China, Hong Kong, and Malaysia. Singapore is a major global financial hub.
Best time to call between GST and SGT
Both GST and SGT sit inside the 9 AM – 5 PM working day between 9:00 AM–1:00 PM GST, which is 1:00 PM–5:00 PM SGT. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
GST and SGT overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
GST is 4 hours ahead of SGT (GST UTC+04:00 → SGT UTC+08:00). The shared working window is 9:00 AM–1:00 PM GST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between GST and SGT?
GST (GST, UTC+04:00) is 4 hours ahead of SGT (SGT, UTC+08:00). The gap is currently +4h.
How do I convert GST time to SGT time?
Add +4h to GST local time. For example, 9:00 AM in GST is 1:00 PM in SGT.
What time is it in SGT right now?
SGT uses SGT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h offset from GST.
What is the best time to call SGT from GST?
Call between 9:00 AM and 1:00 PM GST — that maps to 1:00 PM–5:00 PM SGT and keeps both parties inside the working day.
Which is ahead, GST or SGT?
GST is 4 hours ahead of SGT. When it is 12:00 PM in GST it is 4:00 PM in SGT.
Does daylight saving time affect the GST–SGT difference?
Neither zone observes daylight saving time, so the +4h offset between GST and SGT is fixed all year.
Which other cities share GST's time zone?
GST also covers Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
Which countries use GST, GST's zone?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Is there a day difference between GST and SGT?
Not normally. The +4h gap only pushes the date over for late-evening times.
What is the time difference between GST and SGT?
SGT is +4h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is SGT in?
SGT operates on its local timezone.
Which countries use GST (Gulf Standard Time)?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Does GST observe daylight saving time?
No, GST does not observe daylight saving time and remains at UTC+04:00 year-round.
What are some interesting facts about GST?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
Which cities are in the SGT timezone?
Major cities in the SGT timezone include Singapore.
What is the UTC offset for SGT?
Singapore Standard Time (SGT) is at UTC+08:00.
What should I know about the SGT timezone?
Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00). Singapore does not observe daylight saving time.
When is it midnight in GST, what time is it in SGT?
When it is 12:00 AM (midnight) in GST (GST), it is +4h later in SGT (SGT).
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