 How to call:
15 - Exit code when making an international call from Chad Republic
84 - Vietnamese country code for inbound calls
4 - Hanoi city code
15 + 84 + 4 + Local Number - International dialing code format
 World Times:
The time in Chad Republic is now 15:02:55 PM (03:02:55 PM)
The time in Hanoi Vietnam is now 21:02:55 PM (09:02:55 PM)
 Mobile codes:
To call a mobile phone in Vietnam from Chad Republic use the following dialing code format: 15 + 84 + 9# + The Number
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