The time we now use around the world is called Universal time, or UT. It was formalized a century ago — here's how it works.

And telegraphs meant there was an actual way to share what time it was. Greenwich Mean Time wouldn’t become legally mandated until 1880, apparently because folks kept showing up late to court ...

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.

Did you know the Indian Standard Time (IST) is derived from the Coordinated Universal Time (UTC) with an offset of +5.30 ...

In 1847 the railways agreed to use GMT across the entire network. Therefore, the distribution of Greenwich Mean Time via telegraph signals became absolutely crucial. But not everyone could connect ...

It led to the creation of Greenwich Mean Time (GMT). Show more In 1676, Astronomer Royal John Flamsteed was looking to find a way to determine longitude at sea, so ships could know their position ...