World Timezones

Hanoi to GMT Converter

Compare GMT to Hanoi instead
Hanoi7:58 pmWed, Jun 10
HanoiICT
Vietnam · UTC+7
7:58 pmWed, Jun 10
12a
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11p
Greenwich Mean TimeBST
Europe · UTC+1
1:58 pmWed, Jun 10
6p
7p
8p
9p
10p
11p
12a
1a
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9a
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Offset

The time difference between Hanoi and Greenwich Mean Time is 6 hours.

6 hours

Hanoi (ICT) is ahead of Greenwich Mean Time (BST).

ICT: UTC+7

BST: UTC+1

Greenwich Mean Time is currently observing daylight saving time; Hanoi is not.

When to schedule

Business-hours overlap: 3 PM–5 PM in Hanoi (9 AM–11 AM in Greenwich Mean Time).

Both teams are in working hours during this window on weekdays.

Suggested time: 4:00 PM Hanoi (10:00 AM Greenwich Mean Time).

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.

Vietnam

  • New Year's DayThu, Jan 1
  • Reunification DayThu, Apr 30
  • Labour DayFri, May 1
  • National DayWed, Sep 2

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

About these zones

Hanoi uses Indochina Time (ICT). To call Vietnam, dial +84.

Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.

Greenwich Mean Time is approximately 5,750 miles northwest of Hanoi.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

HanoiGMTDay
12:00 am6:00 pm-1 day
1:00 am7:00 pm-1 day
2:00 am8:00 pm-1 day
3:00 am9:00 pm-1 day
4:00 am10:00 pm-1 day
5:00 am11:00 pm-1 day
6:00 am12:00 amSame day
7:00 am1:00 amSame day
8:00 am2:00 amSame day
9:00 am3:00 amSame day
10:00 am4:00 amSame day
11:00 am5:00 amSame day
12:00 pm6:00 amSame day
1:00 pm7:00 amSame day
2:00 pm8:00 amSame day
3:00 pm9:00 amSame day
4:00 pm10:00 amSame day
5:00 pm11:00 amSame day
6:00 pm12:00 pmSame day
7:00 pm1:00 pmSame day
8:00 pm2:00 pmSame day
9:00 pm3:00 pmSame day
10:00 pm4:00 pmSame day
11:00 pm5:00 pmSame day

Daylight saving time

Greenwich Mean Time observes daylight saving time; Hanoi 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

Hanoi
Sunrise
5:15 AM
Sunset
6:38 PM
Day length
13h 23m
Greenwich Mean Time
Sunrise
4:45 AM
Sunset
9:17 PM
Day length
16h 32m

Daylight overlap: 7h 54m — 10:45 AM–6:38 PM in Hanoi (4:45 AM–12:38 PM in Greenwich Mean Time). Both locations are in daylight during this window.

Cities in these zones

Other cities in Indochina Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Indochina Time

  • HAN
  • BKK
  • DMK
  • HPH

Airports in Greenwich Mean Time

  • LCY
  • LGW
  • LHR
  • LTN
  • STN
  • BHX
  • EMA
  • GLA
  • PIK
  • LBA

Related conversions

Common conversions

What is 9:00 am Hanoi in GMT?
9:00 am Hanoi is 3:00 am GMT.
What is 12:00 pm Hanoi in GMT?
12:00 pm Hanoi is 6:00 am GMT.
What is 12:30 pm Hanoi in GMT?
12:30 pm Hanoi is 6:30 am GMT.
What is 2:00 pm Hanoi in GMT?
2:00 pm Hanoi is 8:00 am GMT.
What is 5:00 pm Hanoi in GMT?
5:00 pm Hanoi is 11:00 am GMT.
What is 11:30 pm Hanoi in GMT?
11:30 pm Hanoi is 5:30 pm GMT.