Here are a few other capitals located close to that longitude:

* Caracas, Venezuela: Located at around 66° West longitude. While not on the exact same longitude, it is very close.

* Bogotá, Colombia: Located at around 74° West longitude.

* Lima, Peru: Located at around 77° West longitude.

It's important to note that while these capitals are all in South America, their longitudes are not *exactly* the same as Georgetown.