The orange arrow on the map above is pointing to the an important line of longitude.

Hello! Your image isn't quite showing up, so this answer could be either the International Date Line, or the Prime Meridian. I'll edit this post as soon as I'm able to see the image. Where is the line located relative to the picture? Is it in the middle going down vertically? Or is it at the edge of the map.

The name may be in importnce  to them

Answertrue: