Greenwich is an early-established district of today’s London, England and the administrative centre of the Royal Borough of Greenwich centred 5.5 miles (8.9 km) east south-east of Charing Cross. Greenwich is notable for its maritime history and for giving its name to the Greenwich Meridian (0° longitude) and Greenwich Mean Time. As the United Kingdom grew into an advanced maritime nation, British mariners kept at least one chronometer on GMT in order to calculate their longitude from the Greenwich meridian, which was by convention considered to have longitude zero degrees (this convention was internationally adopted in the International Meridian Conference of 1884). This practice led to GMT being used worldwide as a reference time independent of location. Most time zones were based upon this reference as a number of hours and half-hours ’ahead of GMT’ or ’behind GMT’. In Greenwich we have many tourist attractions: In Greenwich we have many tourist attractions: the Royal Observatory in Greenwich Park from 1675 to improve navigation at sea and measure longitude. The Peter Harrison Planetarium at the Royal Observatory, Greenwich is now London’s only planetarium, and features state-of-the-art HD projection technology, visualisations based on real scientific data and real astronomers. In Greenwich, we can see the historic ship Cutty Sark.
museums and monumentsCity of London, England, United KingdomLondon, City of London, England, United Kingdom