Hong Kong to Dublin
-7hHong Kong
HKTSOURCEDublin
ISTGreen rows indicate typical business hours (9 AM - 5 PM)
HKT and IST on the World Map
The map below highlights the HKT (Hong Kong Time) and IST (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.
About Hong Kong
WikipediaHong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.
The city has one of the world's most efficient and affordable public transit systems.
Understanding the -7h Gap: Hong Kong vs Dublin
Hong Kong runs on Hong Kong Standard Time (HKT) at UTC+08:00. Dublin runs on Irish Standard Time (IST) at UTC+01:00, also currently on daylight saving time. That puts Hong Kong 7 hours behind Dublin — a difference of -7h at the current offsets.
In practice, when it is 9:00 AM in Hong Kong it is 2:00 AM in Dublin. Midnight in Hong Kong is 5:00 PM in Dublin.Dublin observes daylight saving time while Hong Kong does not, so the gap narrows or widens by an hour part of the year.
Hong Kong to Dublin time conversion table
| Hong Kong (HKT) | Dublin (IST) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | previous day |
| 6:00 AM | 11:00 PM | previous day |
| 7:00 AM | 12:00 AM | same day |
| 8:00 AM | 1:00 AM | same day |
| 9:00 AM | 2:00 AM | same day |
| 12:00 PM | 5:00 AM | same day |
| 3:00 PM | 8:00 AM | same day |
| 5:00 PM | 10:00 AM | same day |
| 6:00 PM | 11:00 AM | same day |
| 9:00 PM | 2:00 PM | same day |
Why people convert Hong Kong to Dublin time
- Scheduling a call from Hong Kong to Dublin: a 10:00 AM start in Hong Kong lands at 3:00 AM in Dublin, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Hong Kong and Dublin are inside the 9-to-5 working day between 4:00 PM and 5:00 PM HKT time (9:00 AM–10:00 AM IST). That is roughly 1 hours of usable overlap.
- Watching a live event or market open: Hong Kong viewers need 2:00 AM in Dublin to catch a 9:00 AM start there, and 7:00 AM if the event is anchored to Hong Kong.
- Always state the zone abbreviation, not just the hour. "3:00 PM HKT" is unambiguous; "3 PM" across a -7h gap is not.
- Block 4:00 PM–5:00 PM HKT as the recurring meeting window if you work primarily from Hong Kong and need Dublin colleagues present.
- Dublin: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
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 Hong Kong and Dublin
Both Hong Kong and Dublin sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM HKT, which is 9:00 AM–10:00 AM IST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Hong Kong and Dublin overlap for only 60 minutes (4:00 PM–5:00 PM HKT), so meetings have to be booked precisely.
Hong Kong is 7 hours behind Dublin (HKT UTC+08:00 → IST UTC+01:00). The shared working window is 4:00 PM–5:00 PM HKT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Hong Kong
Does not observe DST
Dublin
☀ 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 Hong Kong and Dublin?
Hong Kong (HKT, UTC+08:00) is 7 hours behind Dublin (IST, UTC+01:00). The gap is currently -7h.
How do I convert Hong Kong time to Dublin time?
Add -7h to Hong Kong local time. For example, 9:00 AM in Hong Kong is 2:00 AM in Dublin.
What time is it in Dublin right now?
Dublin uses IST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from Hong Kong.
What is the best time to call Dublin from Hong Kong?
Call between 4:00 PM and 5:00 PM HKT — that maps to 9:00 AM–10:00 AM IST and keeps both parties inside the working day.
Which is behind, Hong Kong or Dublin?
Hong Kong is 7 hours behind Dublin. When it is 12:00 PM in Hong Kong it is 5:00 AM in Dublin.
Do Hong Kong and Dublin use different time zones?
Hong Kong (Hong Kong) uses HKT at UTC+08:00, while Dublin (Ireland) uses IST at UTC+01:00. The IANA identifiers are Asia/Hong_Kong and Europe/Dublin.
Does daylight saving time affect the Hong Kong–Dublin difference?
Yes at the moment: Dublin is on daylight saving time and Hong Kong is not, so the -7h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Hong Kong's time zone?
HKT also covers Hong Kong, Kowloon, Tsuen Wan, Sha Tin.
Which countries use HKT, Hong Kong's zone?
HKT is used in Hong Kong SAR.
Is there a day difference between Hong Kong and Dublin?
Not normally. The -7h gap only pushes the date over the previous day.
What is the time difference between Hong Kong and Dublin?
Dublin is -7h from Hong Kong.
What timezone is Hong Kong in?
Hong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.
What timezone is Dublin in?
Dublin operates on its local timezone.
What are the business hours in Hong Kong?
Standard business hours in Hong Kong are 9:00 AM - 6:00 PM HKT.
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 Hong Kong, what time is it in Dublin?
When it is 12:00 AM (midnight) in Hong Kong (HKT), it is -7h later in Dublin (GMT).
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