 How to call:
00 - Exit code when making an international call from Latvia
84 - Vietnamese country code for inbound calls
4 - Hanoi city code
00 + 84 + 4 + Local Number - International dialing code format
 World Times:
The time in Latvia is now 14:34:35 PM (02:34:35 PM)
The time in Hanoi Vietnam is now 18:34:35 PM (06:34:35 PM)
 Mobile codes:
To call a mobile phone in Vietnam from Latvia use the following dialing code format: 00 + 84 + 9# + The Number
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