 How to call:
00 - Exit code when making an international call from Tonga
592 - Guyanese country code for inbound calls
77 - Mabaruma city code
00 + 592 + 77 + Local Number - International dialing code format
 World Times:
The time in Tonga is now 20:49:47 PM (08:49:47 PM)
The time in Mabaruma Guyana is now 03:49:47 AM (03:49:47 AM)
 Mobile codes:
To call a mobile phone in Guyana from Tonga use the following dialing code format: 00 + 592 + 6 + The Number
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