Decimal time clock1/12/2024 ![]() Time could be written fractionally, for example, 6 hours 42 minutes became 6.42 hours and both meant that same thing. Each metric minute became equivalent to 1.44 conventional minutes, and each metric second became 0.864 conventional second. Each metric hour thus became 2.4 conventional hours long. Midnight began at zero hours (or 10 hours), and noon arrived at 5 hours. ![]() ![]() The system officially went into force on November 24, 1793. Jean-Charles de Borda modified the proposal, and based on this foundation the French Parliament decreed that “from midnight to midnight, is divided into ten parts, each part into ten others, and so forth until the smallest measurable portion of duration.”ĭecimal time clock. He also suggested a week of 10 days and dividing the year into 10 "solar months". In 1788, Claude Boniface Collignon, a French attorney, proposed dividing the day into 10 hours, each hour into 100 minutes, each minute into 1000 seconds, and each second into 1000 tierces. This division would result in much easier and more convenient calculations and would be very preferable to the arbitrary division of the livre into twenty sous, of the sou into twelve deniers, of the day into twenty-four hours, the hour into sixty minutes, etc. It would be very desirable that all divisions, for example of the livre, the sou, the toise, the day, the hour, etc. In 1754, French mathematician Jean le Rond d'Alembert proposed that all units of time should be divisible by ten: But what if we change the standards? Decimal Time In any case, these systems were adopted throughout the world and are now the standards of measuring time. The Egyptians also used 12 hour days, possibly because there are twelve lunar cycles in a year, or probably they were easier to count on the 12 finger joints on each hand. “Apollo with the Hours” by Georg Friedrich Kersting (1822) Diving a circle into 360 degrees was also their idea. The Babylonians divided the day into 360 parts, because that was their estimate for the number of days in a year. The division of the hour into 60 minutes and of the minute into 60 seconds came from the Babylonians who used a sexagesimal system for mathematics and astronomy. The number of Horae varied according to different sources, and while the most common is three, by Late Antiquity, their numbers had inflated to twelve, from which came the idea of dividing the day and the night into 12 hours each. The ancient Greeks were the first to introduce the concept of hour after Horae, the goddesses of the seasons and the natural portions of time. Why do we do this? Is it out of habit, or is there any inherent advantage of measuring time by base 60? For centuries we have used the sexagesimal system of measuring time, where each day is divided into 24 hours, each hour into 60 minutes and each minute into 60 second.
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