Offset
The time difference between Greenwich Mean Time and Haiphong is 6 hours.
Greenwich Mean Time (BST) is behind Haiphong (ICT).
BST: UTC+1
ICT: UTC+7
Greenwich Mean Time is currently observing daylight saving time; Haiphong is not.
When to schedule
Business-hours overlap: 9 AM–11 AM in Greenwich Mean Time (3 PM–5 PM in Haiphong).
Both teams are in working hours during this window on weekdays.
Suggested time: 10:00 AM Greenwich Mean Time (4:00 PM Haiphong).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United Kingdom
- Good FridayFri, Apr 3
- Early May Bank HolidayMon, May 4
- Spring Bank HolidayMon, May 25
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
Vietnam
- New Year's DayThu, Jan 1
- Reunification DayThu, Apr 30
- Labour DayFri, May 1
- National DayWed, Sep 2
About these zones
Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.
Haiphong uses Indochina Time (ICT). To call Vietnam, dial +84.
Haiphong is approximately 5,800 miles northeast of Greenwich Mean Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| GMT | Haiphong | Day |
|---|---|---|
| 12:00 am | 6:00 am | Same day |
| 1:00 am | 7:00 am | Same day |
| 2:00 am | 8:00 am | Same day |
| 3:00 am | 9:00 am | Same day |
| 4:00 am | 10:00 am | Same day |
| 5:00 am | 11:00 am | Same day |
| 6:00 am | 12:00 pm | Same day |
| 7:00 am | 1:00 pm | Same day |
| 8:00 am | 2:00 pm | Same day |
| 9:00 am | 3:00 pm | Same day |
| 10:00 am | 4:00 pm | Same day |
| 11:00 am | 5:00 pm | Same day |
| 12:00 pm | 6:00 pm | Same day |
| 1:00 pm | 7:00 pm | Same day |
| 2:00 pm | 8:00 pm | Same day |
| 3:00 pm | 9:00 pm | Same day |
| 4:00 pm | 10:00 pm | Same day |
| 5:00 pm | 11:00 pm | Same day |
| 6:00 pm | 12:00 am | +1 day |
| 7:00 pm | 1:00 am | +1 day |
| 8:00 pm | 2:00 am | +1 day |
| 9:00 pm | 3:00 am | +1 day |
| 10:00 pm | 4:00 am | +1 day |
| 11:00 pm | 5:00 am | +1 day |
Daylight saving time
Greenwich Mean Time observes daylight saving time; Haiphong does not. The offset between the two zones changes when Greenwich Mean Time transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:14 AM
- Sunset
- 9:01 PM
- Day length
- 15h 47m
- Sunrise
- 5:25 AM
- Sunset
- 6:36 PM
- Day length
- 13h 11m
Daylight overlap: 7h 21m — 5:14 AM–12:36 PM in Greenwich Mean Time (11:14 AM–6:36 PM in Haiphong). Both locations are in daylight during this window.
Cities in these zones
Cities in Greenwich Mean Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Airports in Indochina Time
- HAN
- BKK
- DMK
- HPH
Related conversions
Common conversions
- What is 9:00 am GMT in Haiphong?
- 9:00 am GMT is 3:00 pm Haiphong.
- What is 12:00 pm GMT in Haiphong?
- 12:00 pm GMT is 6:00 pm Haiphong.
- What is 12:30 pm GMT in Haiphong?
- 12:30 pm GMT is 6:30 pm Haiphong.
- What is 2:00 pm GMT in Haiphong?
- 2:00 pm GMT is 8:00 pm Haiphong.
- What is 5:00 pm GMT in Haiphong?
- 5:00 pm GMT is 11:00 pm Haiphong.
- What is 11:30 pm GMT in Haiphong?
- 11:30 pm GMT is 5:30 am Haiphong, the next day.