Gjennomsnittlig GPS-koordinater for postnummer 399-3803: 35.615, 137.936
Notering byer:
>> Katsurashima 399-3803, Naganoken, Kamiinagunnakagawamura, GPS-koordinater: 35.6145,137.9363
Notering byer:
>> Katsurashima 399-3803, Naganoken, Kamiinagunnakagawamura, GPS-koordinater: 35.6145,137.9363