Offset
The time difference between Phnom Penh and London is 6 hours.
Phnom Penh (ICT) is ahead of London (BST).
ICT: UTC+7
BST: UTC+1
London is currently observing daylight saving time; Phnom Penh is not.
When to schedule
Business-hours overlap: 3 PM–5 PM in Phnom Penh (9 AM–11 AM in London).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Phnom Penh (10:00 AM London).
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
Phnom Penh uses Indochina Time (ICT). To call Cambodia, dial +855.
London uses Greenwich Mean Time (GMT, or BST). To call United Kingdom, dial +44.
London is approximately 6,200 miles northwest of Phnom Penh.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Phnom Penh | London | Day |
|---|---|---|
| 12:00 am | 6:00 pm | -1 day |
| 1:00 am | 7:00 pm | -1 day |
| 2:00 am | 8:00 pm | -1 day |
| 3:00 am | 9:00 pm | -1 day |
| 4:00 am | 10:00 pm | -1 day |
| 5:00 am | 11:00 pm | -1 day |
| 6:00 am | 12:00 am | Same day |
| 7:00 am | 1:00 am | Same day |
| 8:00 am | 2:00 am | Same day |
| 9:00 am | 3:00 am | Same day |
| 10:00 am | 4:00 am | Same day |
| 11:00 am | 5:00 am | Same day |
| 12:00 pm | 6:00 am | Same day |
| 1:00 pm | 7:00 am | Same day |
| 2:00 pm | 8:00 am | Same day |
| 3:00 pm | 9:00 am | Same day |
| 4:00 pm | 10:00 am | Same day |
| 5:00 pm | 11:00 am | Same day |
| 6:00 pm | 12:00 pm | Same day |
| 7:00 pm | 1:00 pm | Same day |
| 8:00 pm | 2:00 pm | Same day |
| 9:00 pm | 3:00 pm | Same day |
| 10:00 pm | 4:00 pm | Same day |
| 11:00 pm | 5:00 pm | Same day |
Daylight saving time
London observes daylight saving time; Phnom Penh does not. The offset between the two zones changes when London 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
- 5:37 AM
- Sunset
- 6:24 PM
- Day length
- 12h 47m
- Sunrise
- 4:46 AM
- Sunset
- 9:15 PM
- Day length
- 16h 30m
Daylight overlap: 7h 38m — 10:46 AM–6:24 PM in Phnom Penh (4:46 AM–12:24 PM in London). Both locations are in daylight during this window.
Cities in these zones
Other cities in Greenwich Mean Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Indochina Time
- KTI
Airports in Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Related conversions
Common conversions
- What is 9:00 am Phnom Penh in London?
- 9:00 am Phnom Penh is 3:00 am London.
- What is 12:00 pm Phnom Penh in London?
- 12:00 pm Phnom Penh is 6:00 am London.
- What is 12:30 pm Phnom Penh in London?
- 12:30 pm Phnom Penh is 6:30 am London.
- What is 2:00 pm Phnom Penh in London?
- 2:00 pm Phnom Penh is 8:00 am London.
- What is 5:00 pm Phnom Penh in London?
- 5:00 pm Phnom Penh is 11:00 am London.
- What is 11:30 pm Phnom Penh in London?
- 11:30 pm Phnom Penh is 5:30 pm London.