Gjennomsnittlig GPS-koordinater for postnummer 21129: 2.948, 99.057
Notering byer:
>> Nagahuta 21129, North Sumatra, Pematang Siantar, GPS-koordinater: 2.93895,99.04835
>> Simarimbun 21129, North Sumatra, Pematang Siantar, GPS-koordinater: 2.95703,99.06476
Notering byer:
>> Nagahuta 21129, North Sumatra, Pematang Siantar, GPS-koordinater: 2.93895,99.04835
>> Simarimbun 21129, North Sumatra, Pematang Siantar, GPS-koordinater: 2.95703,99.06476