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Greenwich and the story of time

Introduction
Lines around the world
Measuring latitude and longitude
Finding longitude at sea
The first accurate chronometer
The Prime Meridian at Greenwich
Greenwich Mean Time (GMT)
Greenwich Meridian Trail
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Introduction

Greenwich Meridian Line
View full size imageGreenwich Meridian Line. © NMM
Every year many thousands of people visit the Royal Observatory at Greenwich to stand over the line that marks the Prime Meridian of the World.

Why does this line run through Greenwich?

Why is it important today?

 



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Find out more
StoriesMaritime Greenwich: A World Heritage Site
A unique historical landscape
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Hot spotMaritime Greenwich
Uncover the history of this unique historical landscape
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TrailMeridian Trail
Follow the Meridian Line trail through Greenwich Park.
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National Maritime Museum/Royal Observatory GreenwichNew Opportunities Fund 
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