Ideal
Morning
local
EST (UTC−5)
PST (UTC−8)
+855 · UTC+7
Best Time to Call
Cambodia
from the United States
Cambodia's +855 code covers a Southeast Asian market served primarily by Smart Axiata, Cellcard, and Metfone. From the US East Coast, business hours in Cambodia fall between 9:00 PM and 5:00 AM EST.
Best EST: 9:00 PM – 5:00 AM (+1 day)
Mon–Fri
United States
05:56 PM
Outside office
11h
difference
Cambodia
04:56 AM
Sleeping
// Best Time to Call
When to Call Cambodia
A 9-to-5 day in Phnom Penh never overlaps one in New York — at 9:00 AM ET it is 9:00 PM there — so reach them 9:00 PM–5:00 AM ET or leave a message.
Ideal
Afternoon
local
EST (UTC−5)
PST (UTC−8)
Avoid
Avoid
local
EST (UTC−5)
PST (UTC−8)
| Local Time | UTC | EST / New York | CST / Chicago | PST / LA |
|---|---|---|---|---|
| Open | ||||
| Noon | ||||
| PM | ||||
| Close |
US columns use standard time (EST/CST/PST); between the second Sunday in March and the first Sunday in November, US clocks are one hour later.
// Calling Guide
How to call Cambodia — the short version.
Dialing steps
- 1Dial your exit code — 011 from the US and Canada, 00 from most of Europe.
- 2Add the Cambodia country code: +855.
- 3Enter the national number. If it's written with a domestic trunk prefix (often a leading 0), that prefix is usually dropped after the country code.
Best time to call
- 9:00 AM – 5:00 PM in Phnom Penh is 9:00 PM – 5:00 AM EST.
- A 9-to-5 day in Phnom Penh never overlaps one in New York — at 9:00 AM ET it is 9:00 PM there — so reach them 9:00 PM–5:00 AM ET or leave a message.
Quick tips
- Working days: Mon–Fri.
// Calling Etiquette
Calling etiquette in Cambodia
Calling culture
Cambodian business culture values politeness, patience, and respect for hierarchy — a calm, unhurried tone is generally appreciated.
Working week
Mon–Fri.
Free tools
Look up a number from Cambodia
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Frequently Asked
Calling Cambodia — Common Questions
Everything you need to know about reaching contacts in Cambodia.
Calls outside local business hours in Cambodia are less likely to be answered live, but Rozper's AI receptionist and voicemail-to-text still capture the call and notify your team immediately — so you're not limited to the 9:00 PM–5:00 AM EST overlap.
A recognizable local number helps build trust with Cambodian consumers in a mobile-first market.
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