Knowra180th meridianLinked fromLinked fromThe 3 pages that link to 180th meridian, each with the reason it gives.All 3Related 3International Date LineRelated: The date line roughly follows this meridian, though political boundaries force it to bend.Eastern HemisphereRelated: It marks the hemisphere’s eastern boundary.Hemispheres of EarthRelated: It completes the conventional boundary between the Eastern and Western Hemispheres.