What is the dividing line between Grander and Shanwick Oceanic?

The dividing line between the Grander and Shanwick Oceanic Flight Information Regions (FIRs) is aligned with the 30W meridian. This specific boundary is important for managing air traffic over the North Atlantic, where many international flights operate within these FIRs. Each FIR is responsible for providing air traffic services to the aircraft flying in its airspace, and knowing the correct dividing line helps pilots and air traffic controllers navigate effectively during transatlantic flights. The boundary at 30W facilitates organized and safe separation of air traffic, which is crucial in the busy airspace of the North Atlantic.