Keskimääräinen GPS-koordinaatit postinumero bt18: 54.639, -5.825
Listatut kaupungit:
>> Holywood BT18, County Down, Northern Ireland, GPS-koordinaatit: 54.6386,-5.8247
>> Craigavad BT18, County Down, Northern Ireland, GPS-koordinaatit: 54.6386,-5.8247
Listatut kaupungit:
>> Holywood BT18, County Down, Northern Ireland, GPS-koordinaatit: 54.6386,-5.8247
>> Craigavad BT18, County Down, Northern Ireland, GPS-koordinaatit: 54.6386,-5.8247