HKT to GMT
-8hHKT
HKTSOURCEGMT
GMTGreen rows indicate typical business hours (9 AM - 5 PM)
HKT and GMT on the World Map
The map below highlights the HKT (Hong Kong Time) and GMT (Greenwich Mean 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.
GMT – Greenwich Mean Time
UTC+00:00Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.
- •GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
- •The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
- •GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
- •Iceland uses GMT year-round and never observes daylight saving time.
- •The UK switches from GMT to BST (British Summer Time) in late March each year.
Comparing Time Zones: HKT and GMT
HKT runs on Hong Kong Time (HKT) at UTC+08:00. GMT runs on Greenwich Mean Time (GMT) at UTC+00:00. That puts HKT 8 hours behind GMT — a difference of -8h at the current offsets.
In practice, when it is 9:00 AM in HKT it is 1:00 AM in GMT. Midnight in HKT is 4:00 PM in GMT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
HKT to GMT time conversion table
| HKT (HKT) | GMT (GMT) | Day |
|---|---|---|
| 12:00 AM | 4:00 PM | previous day |
| 6:00 AM | 10:00 PM | previous day |
| 7:00 AM | 11:00 PM | previous day |
| 8:00 AM | 12:00 AM | same day |
| 9:00 AM | 1:00 AM | same day |
| 12:00 PM | 4:00 AM | same day |
| 3:00 PM | 7:00 AM | same day |
| 5:00 PM | 9:00 AM | same day |
| 6:00 PM | 10:00 AM | same day |
| 9:00 PM | 1:00 PM | same day |
Why people convert HKT to GMT time
- Scheduling a call from HKT to GMT: a 10:00 AM start in HKT lands at 2:00 AM in GMT, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -8h gap: HKT and GMT have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in GMT is 1:00 AM in HKT.
- Booking travel or deliveries: tracking GMT local time against HKT keeps pickup windows and arrival estimates honest across the -8h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM HKT" is unambiguous; "3 PM" across a -8h gap is not.
- With a -8h gap there is no shared 9-to-5 window, so alternate the early start: one week HKT takes the early slot, the next week GMT does.
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 GMT (Greenwich Mean Time)
Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.
Best time to call between HKT and GMT
With a -8h offset there is no overlap inside a normal 9 AM – 5 PM day. GMT opens at 9:00 AM GMT, which is 1:00 AM in HKT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
HKT and GMT have no shared working hours because of the -8h gap. Teams need to alternate early starts or rely on asynchronous handovers.
HKT is 8 hours behind GMT (HKT UTC+08:00 → GMT UTC+00:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
HKT
Does not observe DST
GMT
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
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 GMT?
HKT (HKT, UTC+08:00) is 8 hours behind GMT (GMT, UTC+00:00). The gap is currently -8h.
How do I convert HKT time to GMT time?
Add -8h to HKT local time. For example, 9:00 AM in HKT is 1:00 AM in GMT.
What time is it in GMT right now?
GMT uses GMT at UTC+00:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -8h offset from HKT.
What is the best time to call GMT from HKT?
There is no shared working-hours window because of the -8h gap. The closest option is 1:00 PM in HKT, which is 5:00 AM in GMT.
Which is behind, HKT or GMT?
HKT is 8 hours behind GMT. When it is 12:00 PM in HKT it is 4:00 AM in GMT.
Does daylight saving time affect the HKT–GMT difference?
Neither zone observes daylight saving time, so the -8h offset between HKT and GMT 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 GMT?
Not normally. The -8h gap only pushes the date over the previous day.
What is the time difference between HKT and GMT?
GMT is -8h from HKT.
What timezone is HKT in?
HKT operates on its local timezone.
What timezone is GMT in?
GMT 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 GMT timezone?
Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.
What is the UTC offset for GMT?
Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.
What should I know about the GMT timezone?
GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
When is it midnight in HKT, what time is it in GMT?
When it is 12:00 AM (midnight) in HKT (HKT), it is -8h later in GMT (GMT).
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