Keskmine GPS koordinaadid postiindeks 20540: 38.887, -77.005
videod linnad:
>> Washington 20540, District of Columbia, District of Columbia, GPS koordinaadid: 38.8874,-77.0047
videod linnad:
>> Washington 20540, District of Columbia, District of Columbia, GPS koordinaadid: 38.8874,-77.0047