HKT to GST
-4hHKT
HKTSOURCEGST
GSTGreen rows indicate typical business hours (9 AM - 5 PM)
HKT and GST on the World Map
The map below highlights the HKT (Hong Kong Time) and GST (Gulf Standard Time) timezone regions across the globe.
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 – 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 to GST Time Difference – Complete Guide
HKT runs on Hong Kong Time (HKT) at UTC+08:00. GST runs on Gulf Standard Time (GST) at UTC+04:00. That puts HKT 4 hours behind GST — a difference of -4h at the current offsets.
In practice, when it is 9:00 AM in HKT it is 5:00 AM in GST. Midnight in HKT is 8:00 PM in GST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
HKT to GST time conversion table
| HKT (HKT) | GST (GST) | Day |
|---|---|---|
| 12:00 AM | 8:00 PM | previous day |
| 6:00 AM | 2:00 AM | same day |
| 7:00 AM | 3:00 AM | same day |
| 8:00 AM | 4:00 AM | same day |
| 9:00 AM | 5:00 AM | same day |
| 12:00 PM | 8:00 AM | same day |
| 3:00 PM | 11:00 AM | same day |
| 5:00 PM | 1:00 PM | same day |
| 6:00 PM | 2:00 PM | same day |
| 9:00 PM | 5:00 PM | same day |
Why people convert HKT to GST time
- Scheduling a call from HKT to GST: a 10:00 AM start in HKT lands at 6:00 AM in GST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both HKT and GST are inside the 9-to-5 working day between 1:00 PM and 5:00 PM HKT time (9:00 AM–1:00 PM GST). That is roughly 4 hours of usable overlap.
- Booking travel or deliveries: tracking GST local time against HKT keeps pickup windows and arrival estimates honest across the -4h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM HKT" is unambiguous; "3 PM" across a -4h gap is not.
- Block 1:00 PM–5:00 PM HKT as the recurring meeting window if you work primarily from HKT and need GST colleagues present.
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.
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.
Best time to call between HKT and GST
Both HKT and GST sit inside the 9 AM – 5 PM working day between 1:00 PM–5:00 PM HKT, which is 9:00 AM–1:00 PM GST. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
HKT and GST overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
HKT is 4 hours behind GST (HKT UTC+08:00 → GST UTC+04:00). The shared working window is 1:00 PM–5:00 PM HKT. 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 HKT and GST?
HKT (HKT, UTC+08:00) is 4 hours behind GST (GST, UTC+04:00). The gap is currently -4h.
How do I convert HKT time to GST time?
Add -4h to HKT local time. For example, 9:00 AM in HKT is 5:00 AM in GST.
What time is it in GST right now?
GST uses GST at UTC+04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -4h offset from HKT.
What is the best time to call GST from HKT?
Call between 1:00 PM and 5:00 PM HKT — that maps to 9:00 AM–1:00 PM GST and keeps both parties inside the working day.
Which is behind, HKT or GST?
HKT is 4 hours behind GST. When it is 12:00 PM in HKT it is 8:00 AM in GST.
Does daylight saving time affect the HKT–GST difference?
Neither zone observes daylight saving time, so the -4h offset between HKT and GST is fixed all year.
Which other cities share HKT's time zone?
HKT also covers Hong Kong, Kowloon, Tsuen Wan, Sha Tin.
Which countries use HKT, HKT's zone?
HKT is used in Hong Kong SAR.
Is there a day difference between HKT and GST?
Not normally. The -4h gap only pushes the date over the previous day.
What is the time difference between HKT and GST?
GST is -4h from HKT.
What timezone is HKT in?
HKT operates on its local timezone.
What timezone is GST in?
GST operates on its local timezone.
Which countries use HKT (Hong Kong Time)?
HKT is used in Hong Kong SAR.
Does HKT observe daylight saving time?
No, HKT does not observe daylight saving time and remains at UTC+08:00 year-round.
What are some interesting facts about HKT?
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.
Which cities are in the GST timezone?
Major cities in the GST timezone include Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
What is the UTC offset for GST?
Gulf Standard Time (GST) is at UTC+04:00.
What should I know about the GST timezone?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
When is it midnight in HKT, what time is it in GST?
When it is 12:00 AM (midnight) in HKT (HKT), it is -4h later in GST (GST).
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