World Timezones

GMT to Phnom Penh Converter

Compare Phnom Penh to GMT instead
Greenwich Mean Time7:55 pmMon, Oct 19
Greenwich Mean TimeBST
Europe · UTC+1
7:55 pmMon, Oct 19
12a
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9p
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11p
Phnom PenhICT
Cambodia · UTC+7
1:55 amTue, Oct 20
6a
7a
8a
9a
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11a
12p
1p
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Offset

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

6 hours

Greenwich Mean Time (BST) is behind Phnom Penh (ICT).

BST: UTC+1

ICT: UTC+7

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

When to schedule

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

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

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

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

About these zones

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

Phnom Penh uses Indochina Time (ICT). To call Cambodia, dial +855.

Phnom Penh is approximately 6,200 miles east of Greenwich Mean Time.

Quick reference

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

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

Daylight saving time

Greenwich Mean Time observes daylight saving time; Phnom Penh 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

Greenwich Mean Time
Sunrise
7:31 AM
Sunset
6:01 PM
Day length
10h 29m
Phnom Penh
Sunrise
5:51 AM
Sunset
5:41 PM
Day length
11h 50m

Cities in these zones

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

  • KTI

Related conversions

Common conversions

What is 9:00 am GMT in Phnom Penh?
9:00 am GMT is 3:00 pm Phnom Penh.
What is 12:00 pm GMT in Phnom Penh?
12:00 pm GMT is 6:00 pm Phnom Penh.
What is 12:30 pm GMT in Phnom Penh?
12:30 pm GMT is 6:30 pm Phnom Penh.
What is 2:00 pm GMT in Phnom Penh?
2:00 pm GMT is 8:00 pm Phnom Penh.
What is 5:00 pm GMT in Phnom Penh?
5:00 pm GMT is 11:00 pm Phnom Penh.
What is 11:30 pm GMT in Phnom Penh?
11:30 pm GMT is 5:30 am Phnom Penh, the next day.