Prosečne GPS koordinate za poštanski broj 309-1721: 36.38, 140.243
Spisak gradova:
>> Hashidume 309-1721, Ibarakiken, Nishiibarakiguntomobemachi, GPS koordinate: 36.3798,140.2431
Spisak gradova:
>> Hashidume 309-1721, Ibarakiken, Nishiibarakiguntomobemachi, GPS koordinate: 36.3798,140.2431