This is due to an unusual context where certain business hours may range beyond midnight (as broadcast television does). and the time read 25:30 instead of 01:30. For example, you could travel to Japan and watch broadcast television at 1:30 a.m. Some parts of the world may log times after 24:00 (midnight). Alternatively, the 24-hour clock time can also be written as hh:mm:ss which represents the exact hour of the day, the exact minute of the day as well as the exact second of the day. For example, it could be 24:45 (translated as 12:45 a.m.). One of them being hh:mm this represents the exact hour of the day as well as the exact minute. The 24-hour clock time can be written in two ways. However, midnight can also be marked 24:00 as it is not only the last hour of a day but, it is also the first hour of the following day. The clock marks each hour starting at midnight (00:00 or 24:00) to 11 p.m. The 24-hour clock is a way of marking time from midnight to midnight. While the United States Navy had already adopted the 24-hour clock in 1920, the United States Army would not begin using it until July 1, 1942, near the start of World War II. Turkey followed in 1925 and Germany would change in 1927. In fact, most of the countries in Latin America had switched to the 24-hour time system in the early 1920’s. Spain, Belgium, Portugal, and Switzerland made the switch by the year 1920. to utilize the 24-hour clock, and they did so in 1920.

The United States Navy was the very first organization in the U.S.A. In 1918 the British Army adopted the 24-hour clock. However, the Canadian armed forces would not choose it until late 1917. Denmark adopted it in 1916 with Greece adopting this system the very next year (1917). The British Royal Navy began using this time system in 1915 during the First World War and the Allied forces would follow suit as well.Įach country began to follow suit and adopt the 24-hour clock time system as their national clock. The French Army began using the 24-hour clock in 1909 whereas the rest of France didn’t start using this time system until 1912. However, in 1893 Italy became the first to adopt the 24-hour clock nationally. In 1886, the Canadian Pacific Railway train at Port Arthur began using the 24-hour clock. The worldwide adoption of the 24-hour clock Their solution was to reduce the amount of strokes each day from 300 strokes to 156 strokes and eventually to 84 strokes per day. The clocks were designed to produce a total of 300 strokes per day which meant they used a lot of rope and would wear down quickly. This clock counted each of the 24 hours in the day. Italy was the first to introduce the world to the mechanical 24-hour public clock. This Egyptian time system of decans would continue to be used by navigators, astronomers, and scientists for centuries. This rising would mark the start of a new “hour” during the night time. These decans would rise on the horizon during each earth rotation.

Decans are small constellations totaling 36 groups of stars. They used what is known as the Egyptian astronomical decan system. It is believed that the Egyptians are the origin of the 24-hour system of time.

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