Starting in 1836, a former Royal Observatory employee named John Belville charged people an annual fee to use his pocket watch. Once a week, he’d come by and visit them and share the time on his watch ...

To fix this the Royal Observatory decided to set a standard time that everyone could set clocks to. This was called Greenwich Mean time(GMT). GMT became the only official time used in the UK ...

From sundials to atomic clocks, our understanding of time has become a lot more accurate as technological developments allowed us to measure it more precisely. Much more than helping us arrive on time ...

The Royal Observatory Greenwich was first built in Greenwich, London, in 1675. At this original location, the observatory was set up with the goal of producing star charts and accurate time ...

Founded in 1675 by King Charles II, the Royal Observatory was first established ... most enduring legacy is the establishment of Greenwich Mean Time (GMT). In the 19th century, as international ...

Founded in 1675 by King Charles II, the Royal Observatory was first established ... most enduring legacy is the establishment of Greenwich Mean Time (GMT). In the 19th century, as international ...

The clocks go forward on Sunday, marking the beginning of British Summer Time (BST). This marks the end of Greenwich Mean Time (GMT) and will mean longer, lighter evenings from next week.

It also sits on the site of the Prime Meridian, the home of Greenwich Mean Time (GMT), which you can visit and stand on. This year the Royal Observatory is celebrating a landmark year, as it turns ...

The Royal Observatory Greenwich was first built in Greenwich, London, in 1675. At this original location, the observatory was set up with the goal of producing star charts and accurate time ...