GST to HKT
+4hGST
GSTSOURCEHKT
HKTGreen rows indicate typical business hours (9 AM - 5 PM)
GST and HKT on the World Map
The map below highlights the GST (Gulf Standard Time) and HKT (Hong Kong 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.
HKT – Hong Kong Time
UTC+08:00Hong Kong Time (HKT, UTC+08:00) is the time zone for Hong Kong, 8 hours ahead of UTC.
- •Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979.
- •HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.
- •The Hong Kong Stock Exchange opens at 09:30 HKT.
- •Hong Kong Time does not change with the seasons, so its gap to other zones is fixed.
GST to HKT Time Difference – Complete Guide
GST runs on Gulf Standard Time (GST) at UTC+04:00. HKT runs on Hong Kong Time (HKT) at UTC+08:00. That puts GST 4 hours ahead of HKT — a difference of +4h at the current offsets.
In practice, when it is 9:00 AM in GST it is 1:00 PM in HKT. Midnight in GST is 4:00 AM in HKT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to HKT time conversion table
| GST (GST) | HKT (HKT) | 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 HKT time
- Scheduling a call from GST to HKT: a 10:00 AM start in GST lands at 2:00 PM in HKT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both GST and HKT are inside the 9-to-5 working day between 9:00 AM and 1:00 PM GST time (1:00 PM–5:00 PM HKT). That is roughly 4 hours of usable overlap.
- Watching a live event or market open: GST viewers need 1:00 PM in HKT to catch a 9:00 AM start there, and 8:00 PM if the event is anchored to GST.
- 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 HKT 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 HKT (Hong Kong Time)
Hong Kong Time (HKT) is fixed at UTC+08:00 all year and does not observe daylight saving time. Hong Kong last used summer time in 1979 and has kept a single offset since. HKT shares the UTC+08:00 offset with China Standard Time, Singapore Time, Malaysian Time, Philippine Time and Australian Western Standard Time, but is listed separately because Hong Kong maintains its own timekeeping authority. As a major financial centre, Hong Kong's trading hours set the rhythm for markets across Asia, opening at 09:30 HKT which is 01:30 in London and 20:30 the previous evening in New York.
Best time to call between GST and HKT
Both GST and HKT 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 HKT. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
GST and HKT 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 HKT (GST UTC+04:00 → HKT 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 HKT?
GST (GST, UTC+04:00) is 4 hours ahead of HKT (HKT, UTC+08:00). The gap is currently +4h.
How do I convert GST time to HKT time?
Add +4h to GST local time. For example, 9:00 AM in GST is 1:00 PM in HKT.
What time is it in HKT right now?
HKT uses HKT 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 HKT from GST?
Call between 9:00 AM and 1:00 PM GST — that maps to 1:00 PM–5:00 PM HKT and keeps both parties inside the working day.
Which is ahead, GST or HKT?
GST is 4 hours ahead of HKT. When it is 12:00 PM in GST it is 4:00 PM in HKT.
Does daylight saving time affect the GST–HKT difference?
Neither zone observes daylight saving time, so the +4h offset between GST and HKT 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 HKT?
Not normally. The +4h gap only pushes the date over for late-evening times.
What is the time difference between GST and HKT?
HKT is +4h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is HKT in?
HKT 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 HKT timezone?
Major cities in the HKT timezone include Hong Kong, Kowloon, Tsuen Wan, Sha Tin.
What is the UTC offset for HKT?
Hong Kong Time (HKT) is at UTC+08:00.
What should I know about the HKT timezone?
Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979. HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.
When is it midnight in GST, what time is it in HKT?
When it is 12:00 AM (midnight) in GST (GST), it is +4h later in HKT (HKT).
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