Hong Kong Time (hkt) is used in Hong Kong. The IANA timezone identifier is Asia/Hong_Kong.

Greenwich Mean Time (gmt) is used in United Kingdom. The IANA timezone identifier is Europe/London.

HKT to GMT Time Converter

Hong Kong Time → Greenwich Mean Time

HKT = UTC+8GMT = UTC+1

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

GMT (London)

United Kingdom · -7h

02:00

New York

USA · -12h

21:00-1 day

Tokyo

Japan · +1h

10:00

Dubai

United Arab Emirates · -4h

05:00

Sydney

Australia · +2h

11:00

HKT (Hong Kong) ↔ GMT (London) — time offset

HKT (Hong Kong) is 7 hours ahead of GMT (London). When it's noon in HKT (Hong Kong), it's 05:00 in GMT (London).

HKT (Hong Kong) runs on Asia/Hong_Kong; GMT (London) runs on Europe/London. Together they are 7 hours apart.

Mutual working hours

Both HKT (Hong Kong) and GMT (London) are simultaneously in business hours for 1 hour per day (assuming standard 9:00–17:00 working hours).

00:0006:0012:0018:0024:00

HKT (Hong Kong)

GMT (London)

Overlap (1h)

Best call times between these locations

There is a 1-hour daily window where both locations are in business hours.

16:00 Hong Kong / 09:00 London✓ Both working

Working hours defined as 09:00–17:00 local time for each location.

Public holidays this year

⚡ Upcoming holidays in both locations, confirm with your contact before booking.

HKT (Hong Kong)6 holidays

Jul 1Hong Kong Special Administrative Region Establishment DaySOON

Sep 26Day following the Mid-Autumn Festival

Oct 1National Day

Oct 19Chung Yeung Festival

Dec 25Christmas Day

GMT (London)6 holidays

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

Dec 25Christmas Day

HKT (Hong Kong) and GMT (London) — practical scheduling

HKT (Hong Kong) (Hong Kong) and GMT (London) (United Kingdom) are 7 hours apart. With a 1-hour daily overlap in standard business hours, both teams can connect in real time without either side stretching beyond their normal workday.

💡 Practical scheduling guidelines

✅

If you are in HKT (Hong Kong), aim for 16:00–17:00, which corresponds to 09:00–10:00 in GMT (London) — both teams are within working hours.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am HKT (Hong Kong)".

HKT (Hong Kong) ↔ GMT (London)

1h of business hours overlap daily (09:00–17:00)

HKT (Hong Kong)

GMT (London)