 How to call:
00 - Exit code when making an international call from Tonga
84 - Vietnamese country code for inbound calls
8 - Ho Chi Minh City city code
00 + 84 + 8 + Local Number - International dialing code format
 World Times:
The time in Tonga is now 13:17:18 PM (01:17:18 PM)
The time in Ho Chi Minh City Vietnam is now 07:17:18 AM (07:17:18 AM)
 Mobile codes:
To call a mobile phone in Vietnam from Tonga use the following dialing code format: 00 + 84 + 9# + The Number
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