Gjennomsnittlig GPS-koordinater for postnummer 20721: 3.594, 98.482
Notering byer:
>> Rambung Timur 20721, North Sumatra, Binjai, GPS-koordinater: 3.59448,98.48226
Notering byer:
>> Rambung Timur 20721, North Sumatra, Binjai, GPS-koordinater: 3.59448,98.48226