Keskmine GPS koordinaadid postiindeks 20531: 38.894, -77.022
videod linnad:
>> Washington 20531, District of Columbia, District of Columbia, GPS koordinaadid: 38.8938,-77.0218
videod linnad:
>> Washington 20531, District of Columbia, District of Columbia, GPS koordinaadid: 38.8938,-77.0218