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  2. Prime meridian (Greenwich) - Wikipedia

    en.wikipedia.org/wiki/Prime_meridian_(Greenwich)

    The Greenwich meridian is a prime meridian, a geographical reference line that passes through the Royal Observatory, Greenwich, in London, England. [1] From 1884 to 1974, the Greenwich meridian was the international standard prime meridian, used worldwide for timekeeping and navigation. The modern standard, the IERS Reference Meridian, is based ...

  3. Longitude by chronometer - Wikipedia

    en.wikipedia.org/wiki/Longitude_by_chronometer

    Longitude by chronometer. Longitude by chronometer is a method, in navigation, of determining longitude using a marine chronometer, which was developed by John Harrison during the first half of the eighteenth century. It is an astronomical method of calculating the longitude at which a position line, drawn from a sight by sextant of any ...

  4. Ordnance Survey National Grid - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey_National_Grid

    v. t. e. The Ordnance Survey National Grid reference system (OSGB), also known as British National Grid (BNG), [1][2] is a system of geographic grid references, distinct from latitude and longitude, whereby any location in Great Britain can be described in terms of its distance from the origin (0, 0), which lies to the west of the Isles of Scilly.

  5. 15th meridian east - Wikipedia

    en.wikipedia.org/wiki/15th_meridian_east

    The meridian 15° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Europe, Africa, the Atlantic Ocean, the Southern Ocean, and Antarctica to the South Pole. Wikimedia Commons has media related to 15th meridian east. The 15th meridian east forms a great circle with the 165th meridian west.

  6. Geography of the United Kingdom - Wikipedia

    en.wikipedia.org/.../Geography_of_the_United_Kingdom

    Geography of the United Kingdom. Mountainous area to the north and west, lowland area to the south and east. The United Kingdom is a sovereign state located off the north-western coast of continental Europe. The United Kingdom is made up of four countries – England, Scotland, Wales and Northern Ireland.

  7. Centre points of the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Centre_points_of_the...

    Centre points of the United Kingdom. This stake is one of several way markers that mark the location of variously calculated geographic centres of Britain. [citation needed] It is located just to the west of Whitendale Hanging Stones in Lancashire at SD 64188 56541. There has long been debate over the exact location of the geographical centre ...

  8. Module:Location map/data/UK England - Wikipedia

    en.wikipedia.org/wiki/Module:Location_map/data/...

    Module:Location map/data/UK England is a location map definition used to overlay markers and labels on an equirectangular projection map of England. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.

  9. Module:Location map/data/North East England - Wikipedia

    en.wikipedia.org/wiki/Module:Location_map/data/...

    North East England districts 2011 map.svg. Module:Location map/data/North East England is a location map definition used to overlay markers and labels on an equirectangular projection map of North East England. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.

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