Gjennomsnittlig GPS-koordinater for postnummer 180-40: 37.326, 23.436
Notering byer:
>> Ύδρα/Hydra 180-40, Αττική/Attica, Νομαρχία Πειραιά/Piraeus, GPS-koordinater: 37.32615, 23.43594
Notering byer:
>> Ύδρα/Hydra 180-40, Αττική/Attica, Νομαρχία Πειραιά/Piraeus, GPS-koordinater: 37.32615, 23.43594