The earliest users of accurate time were the navy. It was
vitally important to aid navigation so an accurate position of ships could be
determined. Historic Maritime Greenwich is the centre of time because King
Charles II established the first Royal Observatory in the Royal Park at
Greenwich in 1675. It was set-up to improve naval navigation. Britain at that
time was a strong sea power.
The US Naval Observatory (USNO) was established in Washington,
DC, in 1830 to co-operate with the Royal Greenwich Observatory to develop
accurate time-keeping for the navy. It still is today and the main clock on
this site is sourced from the US Naval Observatory in Washington DC.
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Daylight Saving Time in USA
& Canada: Sunday 14 March 2010 - Sunday 7 November 2010
Europe / UK clocks on Summer Time / Daylight Saving Time:
Sunday 28 March 2010 01:00 GMT - Sunday 31 October 2010
The earliest users of accurate time were the navy. It was
vitally important to aid navigation so an accurate position of ships could be
determined. Historic Maritime Greenwich is the centre of time because 