United States
Boston

United States

Cambodia
Phnom Penh

Cambodia

Boston to Phnom Penh Time Difference

Phnom Penh is 11 hours ahead of Boston

BostonUnited States
10:03 PM
Wednesday, April 1, 2026
UTC-4
Phnom PenhCambodia
9:03 AM
Thursday, April 2, 2026
UTC+7

Boston vs Phnom Penh — At a Glance

Boston
Phnom Penh
Time Zone
UTC-4
UTC+7
Currency
USD
KHR
Language
English
Khmer
Dial Code
+1
+855
Hub Type
tech
government

Boston to Phnom Penh — Hour-by-Hour

Boston, United States
Phnom Penh, Cambodia
12:00 AM
11:00 AM
1:00 AM
12:00 PM
2:00 AM
1:00 PM
3:00 AM
2:00 PM
4:00 AM
3:00 PM
5:00 AM
4:00 PM
6:00 AM
5:00 PM
7:00 AM
6:00 PM
8:00 AM
7:00 PM
9:00 AM
8:00 PM
10:00 AM
9:00 PM
11:00 AM
10:00 PM
12:00 PM
11:00 PM
1:00 PM
12:00 AM(Apr 2)
2:00 PM
1:00 AM(Apr 2)
3:00 PM
2:00 AM(Apr 2)
4:00 PM
3:00 AM(Apr 2)
5:00 PM
4:00 AM(Apr 2)
6:00 PM
5:00 AM(Apr 2)
7:00 PM
6:00 AM(Apr 2)
8:00 PM
7:00 AM(Apr 2)
9:00 PM
8:00 AM(Apr 2)
10:00 PM
9:00 AM(Apr 2)
11:00 PM
10:00 AM(Apr 2)

About Boston and Phnom Penh

Boston (population: 0.68M) is known for Harvard, MIT, biotech industry, and American history. Phnom Penh (population: 2.1M) is known for the Royal Palace, Mekong River, and Cambodia's emerging digital economy.

Business Hours Overlap

Phnom Penh is a national capital, so official government hours (typically 9 AM–5 PM) are the primary window for diplomatic and administrative communication with Boston.

Calling Between Cities

With 11 hours between Boston (+1) and Phnom Penh (+855), finding a mutually convenient calling time is tricky. Consider scheduling calls in advance rather than calling spontaneously.

Currency

Boston uses USD while Phnom Penh uses KHR. Check current exchange rates before making payments or transferring funds between the two cities.

Language

Boston and Phnom Penh share English as a common language, which simplifies business communication.

Use our world clock tool to compare Boston and Phnom Penh visually, or browse more timezone conversions.

Frequently Asked Questions

What is the time difference between Boston and Phnom Penh?

Phnom Penh, Cambodia is 11 hours ahead of Boston, United States. Boston is in the America/New York timezone (UTC-4) and Phnom Penh is in the Asia/Bangkok timezone (UTC+7).

When it's noon in Boston, what time is it in Phnom Penh?

When it's 12:00 PM (noon) in Boston, it's 11:00 PM in Phnom Penh.

What is the best time to call Phnom Penh from Boston?

The best time to call Phnom Penh from Boston is during the overlapping business hours. When it's 9 AM in Boston, it's 8:00 PM in Phnom Penh. Aim for late morning to early afternoon in Boston for the best chance of reaching someone during working hours.

What currency does Phnom Penh use?

Phnom Penh, Cambodia uses KHR. Boston uses USD. You will need to check the current exchange rate for transactions between the two.

What language is spoken in Phnom Penh?

The primary languages in Phnom Penh are Khmer, English. Boston also speaks English, making communication easier.

How do I dial Phnom Penh from Boston?

To call Phnom Penh from Boston, dial your international access code followed by +855 and the local number. Boston uses country code +1 and Phnom Penh uses +855.

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