Prosečne GPS koordinate za poštanski broj 300-0817: 36.061, 140.18
Spisak gradova:
>> Nagakuni 300-0817, Ibarakiken, Tsuchiurashi, GPS koordinate: 36.0614,140.1804
Spisak gradova:
>> Nagakuni 300-0817, Ibarakiken, Tsuchiurashi, GPS koordinate: 36.0614,140.1804