Military Time how to tell time in a 24 hour clock

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We call “Military Time” the convention of time that divides the day in 24 hours, from midnight to midnight, or from 0 to 23, where every notation appears only one time per day. • This is different from the 12-hour clock, where every notation appears two times per day, adding a suffix to differentiate them: AM or PM. • Although the 12-hour clock is one of the most common time conventions in the world, Military Time has been the standard for some industries and professions. • But, why? And how? • Well, first let’s check its origins. • The 24-hour time system, aka, Military Time was originated by the Egyptian system of decans, in which time was measured with the position of 36 different constellations. • In East Asia they used Military Time before the westernization of their culture, some 12-hour western-made clocks were changed to Asian system before shipping. It is believed that the Prague Orjol was one of those clocks. • Mechanical public clocks were introduced in Italy, they used Military Time, and began the hour counting one-half hour after sundown, however, chiming clocks had to use a lot of rope to produce the 300 strokes required for that. So some localities switched to 12-hour clocks that only need 156 strokes, two laps per day. • Then, in the late XIX Century, Sir Sandford Fleming, a Scottish inventor, proposed the use of one 24-hour clock for the entire world, linked to the Greenwich Meridian. Also, he promoted the use of worldwide standard time zones and influenced the creation of Coordinated Universal Time, commonly known as UTC. • Then, the International Meridian Conference adopted the idea to set the universal day as the mean solar day, as we can notice in this resolution quote during the conference: • “That this universal day is to be a mean solar day; is to begin for all the world at the moment of midnight of the initial meridian coinciding with the beginning of the civil day and date of that meridian, and is to be counted from zero up twenty-four hours.” • In the coming years, the Canadian Pacific Railway, where Fleming was an engineer, was among the first organizations to adopt the 24-hour clock in the world. Then the system was adopted by other western countries. Also, the Indian railway system switched to Military Time too. • Some armed forces switched to Military Time during World War I, the US Navy was the first US organization to join, but the US Army adopted it officially until World War II. • In the UK, the system has failed to establish successfully after several attempts, the British Royal Navy was the first military force on switch. Nowadays, the British Rail Company and the London Transport use the 24-hour clock for their time tables, and the BBC uses a mixture of both systems, same as other English-speaking countries. • The 24-hour clock is ruled by the ISO 8601, established in 1988. And as most of us know, the system works in this format, the midnight is noted this way, representing the beginning of the next day, but if we want to mean precisely that the given day is finished, it is ok to use this format to represent midnight. • In some countries like Japan, it is common to find notations of the Military Time representing the hour beyond the 24 or 23, for example, if a bar or club is open until 06:00, they advertise as being open until 30:00, in part because closing time is part of the same business day and also with the goal to avoid any ambiguity. • Times after 24:00 is also used to in some context where business hours extend beyond midnight, like in broadcasting television schedules. This kind of form is rarely used on daily talks. • Computers and OS like Microsoft Windows and macOS represent time with 24-hour clock too. They only switch to 12-hours only if a computer is modified for that. • In medicine, Military Time is used when it is time to set the patient’s clinic register and avoid any misunderstanding about any medical event or medication time. Emergency services and rescue bodies use it often too. • More industries, like navigation, tourism, astronomy, and meteorology use Military Time to avoid any inconvenience situations. • The 24-hour clock got recognition as Military Time due to how much is used by armies from Canada and US, in countries where the standard is used the 12-hour clock. There are some specific rules for them. • For UTC is designated time zone Z, spoken as Zulu Time, for any local time, with the letter J, pronounced as Juliett. • Here at Explainosphere, we like explaining things. As curious and eccentric as they may seem, we believe there is always someone, somewhere, trying to figure out how things work. • If we answered your question about the Military Time, leave us a message in the comments. • Music: https://www.purple-planet.com

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