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Maritime Partnership

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...discover the Maritime Histories of UK Port Cities

PortCities sites: Bristol | Hartlepool | Liverpool | London | Southampton

Greenwich and the story of time

Chapter Index

• 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. © 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?

 

Chapter Index

• 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

Send this story to a friend | Printer-friendly version | View this story in pictures

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FIND OUT MORE

• Maritime Greenwich: A World Heritage Site
• Maritime Greenwich
• Meridian Trail

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