Eventually the rest of the world began to use this system, shaping the time zones we know today. Other countries created their own standard times and, in the late 1880s, the International Meridian Conference proposed a standardised 24-hour day, starting off at midnight GMT. The Event Time Announcer was previously known as the Fixed Time World Clock. For instance, 00:25 in 24-hour time is 12:25 AM in 12-hour time. Use the Time Zone Converter to convert between two time zones. For the first hour of the day, simply add a 12 where you see the initial 0 to convert to 12-hour time. However, in 1855, the Royal Greenwich Observatory started transmitting time signals and in 1880, the Greenwich Mean Time (GMT) became the country’s official standard time. To go from 24-hour time to 12-hour time, keep in mind that the 24-hour day starts at 00:00 instead of 12:00 AM. In 1847, British railway companies began to standardize the time they were using by providing their staff with portable chronometers, resulting in what became known as ‘Railway Time’. A better system was required to enable an efficient operation of railways and new telecommunication systems. Since the time calculations were based on the position of the sun, they could vary by four minutes for each degree of longitude.

In the nineteenth century, when mechanical clocks began to become popular, time was calculated locally. All clock changes worldwide are automatically taken into account and displayed in real-time as soon as you reload the page.

Time has traditionally been measured according to the position of the sun in the sky, which is different depending on where you are in the world.

Clock in out time converter