Gjennomsnittlig GPS-koordinater for postnummer 21363: 2.949, 99.775
Notering byer:
>> Selat Lancang 21363, North Sumatra, Tanjung Balai, GPS-koordinater: 2.94855,99.77467
Notering byer:
>> Selat Lancang 21363, North Sumatra, Tanjung Balai, GPS-koordinater: 2.94855,99.77467