The Prime meridian

The prime meridian runs through Greenwich, London because it was established as the international standard for zero degrees longitude at the International Meridian Conference in 1884. The conference chose Greenwich as the location for the prime meridian because the Royal Observatory in Greenwich had already been established as the reference point for timekeeping and navigation. This decision helped standardize timekeeping and navigation around the world. It is important that we share standards for things like this. Among other things, lines of longitude are used to establish time zones, and it’s important we coordinate our watches across the globe for the purposes of trade and international travel.#Primemeridian #Greenwich