Prosečne GPS koordinate za poštanski broj 8640: 47.222, 8.815

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Spisak gradova:
>> Hurden 8640, Kanton Schwyz, Bezirk Höfe, Freienbach, GPS koordinate: 47.2137,8.8033
>> Rapperswil SG 8640, Kanton St. Gallen, Wahlkreis See-Gaster, Rapperswil-Jona, GPS koordinate: 47.2296,8.8267