Greenwich Means Time to the World

🌐 Pick a country, view the time

Time Websites

Royal Observatory Greenwich

The Royal Observatory Greenwich has a large number of Information Leaflets on Time & Astronomy packed full of useful information.



Time Research

  • Sunrise, Sunset and Twilight Times Computation for anywhere in the world

  • Compute Local Apparent Sidereal Time that is the actual time for your spot on the globe in relation to Greenwich. Outside the USA you will have to know your longitude (that's the East, West one!) Greenwich is at zero degrees Prime Meridian of the World.

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