 How to call:
001 - Exit code when making an international call from Hong Kong
84 - Vietnamese country code for inbound calls
518 - Da Nang City city code
001 + 84 + 518 + Local Number - International dialing code format
 World Times:
The time in Hong Kong is now 22:42:48 PM (10:42:48 PM)
The time in Da Nang City Vietnam is now 21:42:48 PM (09:42:48 PM)
 Mobile codes:
To call a mobile phone in Vietnam from Hong Kong use the following dialing code format: 001 + 84 + 9# + The Number
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