Gjennomsnittlig GPS-koordinater for postnummer 20997: 3.551, 99.12
Notering byer:
>> Teluk Mengkudu 20997, North Sumatra, Serdang Bedagai, GPS-koordinater: 3.55116,99.12012
Notering byer:
>> Teluk Mengkudu 20997, North Sumatra, Serdang Bedagai, GPS-koordinater: 3.55116,99.12012