Gjennomsnittlig GPS-koordinater for postnummer 811-09: 40.992, 22.573
Notering byer:
>> Πέτρα/Petra 811-09, Βόρειο Αιγαίο/North Aegean, Νομός Λέσβου/Lesbos, GPS-koordinater: 40.99214, 22.57290
Notering byer:
>> Πέτρα/Petra 811-09, Βόρειο Αιγαίο/North Aegean, Νομός Λέσβου/Lesbos, GPS-koordinater: 40.99214, 22.57290