Time Difference Between Shanghai and Phnom Penh

The time difference between Shanghai and Phnom Penh is 1 hour. When it is 12:00 noon in Shanghai, it is 11:00 in Phnom Penh. Shanghai uses the Asia/Shanghai time zone (UTC+8), while Phnom Penh uses Asia/Phnom_Penh (UTC+7).

Phnom Penh is 1 hour behind Shanghai — 1 hour

Shanghai, China

04:56:24

Friday, March 27, 2026

UTC+8 · CST

↔

Phnom Penh, Cambodia

03:56:24

Friday, March 27, 2026

UTC+7 · +07

Time Zone Details: Shanghai vs Phnom Penh

Detail	Shanghai	Phnom Penh
Time Zone ID	Asia/Shanghai	Asia/Phnom_Penh
UTC Offset	UTC+8	UTC+7
Abbreviation	CST	+07
DST Active	No	No
Country	China	Cambodia
Region	Asia	Asia

Best Time to Schedule a Call

There are 7 overlapping business hours between Shanghai and Phnom Penh (assuming 9:00–17:00 in each city). The ideal window for calls and meetings is:

10:00–17:00 in Shanghai = 09:00–16:00 in Phnom Penh

Hour-by-Hour Time Conversion

Use this table to quickly convert any hour from Shanghai time to Phnom Penh time. Rows highlighted in green indicate overlapping business hours in both cities.

Shanghai	Phnom Penh
00:00	23:00 (-1 day)	Night
01:00	00:00	Night
02:00	01:00	Night
03:00	02:00	Night
04:00	03:00	Night
05:00	04:00	Night
06:00	05:00
07:00	06:00
08:00	07:00
09:00	08:00
10:00	09:00	Overlap
11:00	10:00	Overlap
12:00	11:00	Overlap
13:00	12:00	Overlap
14:00	13:00	Overlap
15:00	14:00	Overlap
16:00	15:00	Overlap
17:00	16:00
18:00	17:00
19:00	18:00
20:00	19:00
21:00	20:00
22:00	21:00	Night
23:00	22:00	Night

Daylight Saving Time (DST) Impact

Neither Shanghai nor Phnom Penh is currently observing daylight saving time. If either city observes DST, the time difference will change by 1 hour when DST begins or ends. Always double-check before scheduling across these time zones during March–April and October–November.

Practical Tips for Shanghai–Phnom Penh Scheduling

Video calls: Target the 7-hour overlap window listed above. Both teams will be within normal working hours.
Email and async work: Send messages at the end of your workday so they arrive at the start of theirs. With a 1 hour offset, replies will often land by your next morning.
Flight arrivals: A direct flight between these cities can cross 1 time zone. Factor in jet lag recovery — most travelers need roughly one day per hour of time difference to fully adjust.
Use UTC as a neutral reference when coordinating with three or more time zones at once.

Compare Shanghai and Phnom Penh with Other Cities

From Shanghai

Shanghai vs New York Shanghai vs London Shanghai vs Tokyo Shanghai vs Sydney Shanghai vs Dubai Shanghai vs Los Angeles Shanghai vs Paris Shanghai vs Singapore Shanghai vs Berlin Shanghai vs Toronto Shanghai vs Hong Kong Shanghai vs Mumbai Shanghai vs Seoul Shanghai vs Chicago Shanghai vs San Francisco Shanghai vs Moscow Shanghai vs Bangkok Shanghai vs Sao Paulo Shanghai vs Mexico City Shanghai vs Cairo Shanghai vs Johannesburg

From Phnom Penh

Phnom Penh vs New York Phnom Penh vs London Phnom Penh vs Tokyo Phnom Penh vs Sydney Phnom Penh vs Dubai Phnom Penh vs Los Angeles Phnom Penh vs Paris Phnom Penh vs Singapore Phnom Penh vs Berlin Phnom Penh vs Toronto Phnom Penh vs Hong Kong Phnom Penh vs Mumbai Phnom Penh vs Seoul Phnom Penh vs Chicago Phnom Penh vs San Francisco Phnom Penh vs Moscow Phnom Penh vs Bangkok Phnom Penh vs Sao Paulo Phnom Penh vs Mexico City Phnom Penh vs Cairo Phnom Penh vs Johannesburg

Frequently Asked Questions

What is the time difference between Shanghai and Phnom Penh?

The time difference is 1 hour. Phnom Penh is 1 hour behind Shanghai.

Does the time difference change during the year?

It can. If either Shanghai or Phnom Penh observes daylight saving time, the gap will shift by 1 hour during the transition periods (typically March–April and October–November).

When is the best time to call from Shanghai to Phnom Penh?

The best window is between 10:00 and 17:00 Shanghai time, which corresponds to 09:00–16:00 in Phnom Penh. Both sides fall within normal business hours.

How do I convert Shanghai time to Phnom Penh time?

Subtract 1 hour from Shanghai time to get Phnom Penh time. Use the hour-by-hour table above for a quick reference.

Related Pages

Current time in Shanghai — live clock, time zone details, DST status
Current time in Phnom Penh — live clock, time zone details, DST status
Time Difference Calculator — compare any two cities
UTC+8 countries and cities
UTC+7 countries and cities
Current UTC Time
All World Time Zones
What Is a Time Zone?

For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.