Offset
The time difference between Shanghai and Phnom Penh is 1 hour.
Shanghai (CST) is ahead of Phnom Penh (ICT).
CST: UTC+8
ICT: UTC+7
Neither Shanghai nor Phnom Penh is currently observing daylight saving time.
When to schedule
Business-hours overlap: 10 AM–5 PM in Shanghai (9 AM–4 PM in Phnom Penh).
Both teams are in working hours during this window on weekdays.
Suggested time: 1:00 PM Shanghai (12:00 PM Phnom Penh).
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.
China
- New Year's DayThu, Jan 1
- Chinese New Year (Spring Festival)Tue, Feb 17
- Labour DayFri, May 1
- Dragon Boat FestivalFri, Jun 19
- Mid-Autumn FestivalFri, Sep 25
- National DayThu, Oct 1
About these zones
Shanghai uses China Standard Time (CST). To call China, dial +86.
Phnom Penh uses Indochina Time (ICT). To call Cambodia, dial +855.
Phnom Penh is approximately 1,700 miles southwest of Shanghai.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Shanghai | Phnom Penh | Day |
|---|---|---|
| 12:00 am | 11:00 pm | -1 day |
| 1:00 am | 12:00 am | Same day |
| 2:00 am | 1:00 am | Same day |
| 3:00 am | 2:00 am | Same day |
| 4:00 am | 3:00 am | Same day |
| 5:00 am | 4:00 am | Same day |
| 6:00 am | 5:00 am | Same day |
| 7:00 am | 6:00 am | Same day |
| 8:00 am | 7:00 am | Same day |
| 9:00 am | 8:00 am | Same day |
| 10:00 am | 9:00 am | Same day |
| 11:00 am | 10:00 am | Same day |
| 12:00 pm | 11:00 am | Same day |
| 1:00 pm | 12:00 pm | Same day |
| 2:00 pm | 1:00 pm | Same day |
| 3:00 pm | 2:00 pm | Same day |
| 4:00 pm | 3:00 pm | Same day |
| 5:00 pm | 4:00 pm | Same day |
| 6:00 pm | 5:00 pm | Same day |
| 7:00 pm | 6:00 pm | Same day |
| 8:00 pm | 7:00 pm | Same day |
| 9:00 pm | 8:00 pm | Same day |
| 10:00 pm | 9:00 pm | Same day |
| 11:00 pm | 10:00 pm | Same day |
Daylight saving time
Neither Shanghai nor Phnom Penh observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:50 AM
- Sunset
- 6:58 PM
- Day length
- 14h 8m
- Sunrise
- 5:37 AM
- Sunset
- 6:24 PM
- Day length
- 12h 47m
Daylight overlap: 12h 21m — 6:37 AM–6:58 PM in Shanghai (5:37 AM–5:58 PM in Phnom Penh). Both locations are in daylight during this window.
Cities in these zones
Other cities in China Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in China Standard Time
- PVG
- SHA
- PEK
- PKX
- SZX
- CAN
- FUO
- CTU
- TFU
- TSN
Airports in Indochina Time
- KTI
Related conversions
Common conversions
- What is 9:00 am Shanghai in Phnom Penh?
- 9:00 am Shanghai is 8:00 am Phnom Penh.
- What is 12:00 pm Shanghai in Phnom Penh?
- 12:00 pm Shanghai is 11:00 am Phnom Penh.
- What is 12:30 pm Shanghai in Phnom Penh?
- 12:30 pm Shanghai is 11:30 am Phnom Penh.
- What is 2:00 pm Shanghai in Phnom Penh?
- 2:00 pm Shanghai is 1:00 pm Phnom Penh.
- What is 5:00 pm Shanghai in Phnom Penh?
- 5:00 pm Shanghai is 4:00 pm Phnom Penh.
- What is 11:30 pm Shanghai in Phnom Penh?
- 11:30 pm Shanghai is 10:30 pm Phnom Penh.