Easternmost point - Hvalbakur, Suður-Múlasýsla:
Latitude: 64°35′N
Longitude: 13°14′W
The easternmost point in Iceland is approximately 13.49° West longitude.
That point is in Iceland, about 65 miles northeast of Reykjavik. Longitude is east/west. Latitude is north/south.
Every point on Earth has both a longitude and a latitude. And if someone gives you a longitude and a latitude, you can use them to find exactly one point on Earth.
The point where they cross is zero latitude / 180° longitude.
That point in in southern Iceland, about 190 km east-southeast of the center of Reykjavik.
Every point on the surface of the earth has latitude and longitude. If the latitude and longitude of a point are given and they're sufficiently accurate, the point can be found within less than an inch, anywhere on earth.
24 N is latitude, 55E is longitude. That point is in the UAE.
Every point on Earth has a latitude and a longitude. Together, they tell you exactly where the point is located.
Once you name a longitude and latitude, you've nailed down a single point on the Earth's surface, and no other point anywhere on Earth can have the same longitude and latitude.
Ontario, California: 34N05, 117W62 Ontario, Oregon: 44N02, 117W02 Ontario, Canada: irregular in shape, but extending from roughly 55N59'38" at its northernmost point (Fort Severn) 42N16 at its southernmost (Windsor) 74W43'02.64" at its easternmost point (Cornwall) 94W27'56.16" at its westernmost (Kenora)
There's no city there. That point is located on the coast of Iceland, about 60 miles north of Reykjavik.
Latitude and Longitude are used to point to exactly where you want to be