It's the Greenwich meridian
The prime meridian in located at 0 degress longitude, and passes through Grenich, England.
89 degrees
London
London.
London.
That would be Greenwich.
The latitude and longitude of Big Ben clocktower in London is 52 degrees North latitude and O degrees longitude.
Everything from 1 degree 50 minutes east to 8 degrees 13 minutes west. But the Prime Meridian, at zero degrees, is defined as the location of the British Royal Observatory in Greenwich, England.
The longitude of Greenwich Observatory, near London, England. Check out GMT.
The Prime Meridien (0 degrees longitude) passes through the London Borough of Greenwich - hence GMT (Greenwich Mean Time).
Approximately 51 degrees north, 7 degrees west.
19.8968° degrees North, 155.5828° degrees West