1. The Greenwich meridian is an imaginary line that runs from the North Pole to the South Pole, passing through Greenwich, England.
2. The Greenwich meridian is also known as the Prime Meridian, from which all other lines of longitude are measured.
3. The Greenwich meridian is marked by a brass strip in the ground at the Royal Observatory in Greenwich.
4. When sailors navigate the seas, they use the Greenwich meridian as a reference point to determine their position.
5. The Greenwich meridian is important for coordinating time zones around the world.
6. Countries that are located to the east of the Greenwich meridian are ahead in time, while those to the west are behind.
7. The Greenwich meridian was established in 1884 at the International Meridian Conference held in Washington, D.C.
8. The Greenwich meridian is an essential tool for astronomers and cartographers in mapping the Earth's surface.
9. The Greenwich meridian is one of the most famous lines of longitude in the world.
10. The Greenwich meridian has played a crucial role in the development of modern navigation and timekeeping systems.