Jump to content | Home

Portcities London

reflecting our cultures

[Bypass: Visit the Port Cites Consortium ]
[Bypass: Search Facilities ]
      Advanced Search

Maritime London Partnership

-Bypass site links |  Full graphics | About this Site | Feedback

On this site:

[Bypass: Main Menu ]
You are here:  PortCities London home > The working Thames > Port of science and discovery

Back to Measuring latitude and longitude
Time equals longitudeTime equals longitude
Time equals longitude

© National Maritime Museum, London

Repro ID: Day_Night
Title: Time equals longitude
Description: When it is midday on one side of the earth, it is midnight on the other. Each 15 degrees of longitude is the equivalent to a time difference of one hour. So a sailor found out how far east or west he was from home, by comparing the local time (which could be found from observations of the Sun or the stars) with the time back at home at the same moment.
Creator: Anton Vamplew
Date: 2004
Credit line: National Maritime Museum

[Bypass: Search Facilities ]
      Advanced Search


10 Galleries

258 Images

1 Fact file

1 Trail

Top | Legal & Copyright |  Partner Sites: Bristol | Hartlepool | Liverpool | Southampton | About this Site | Feedback | Full graphics