#Standard time conversion chart how to#

Below, you can see the complete table of the conversions between CST and London. 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. London, United Kingdom time is 6:00 hours ahead of Central Standard 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. This is equal to 365 days per year divided by 12 months per year. Months in this time conversion calculator are calculated using the average of 30.41 6 days per month.

#Standard time conversion chart how to#

Learn how to convert from one time unit into another. 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’. Convert decimal time to seconds, minutes, hours, days, weeks, and years. 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. 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.