From Wikipedia, the free encyclopedia.
Several proposals for metric time systems not based on the second but instead on decimal fractions of an Earth day have been advanced. Many of these include a unit of 10-3 day, which is 1.44 minutes.
The most popular unit system was instituted in France during the Revolution as part of the French Revolutionary Calendar:
- 10 metric hours in a day (2 h 24 min each)
- 100 metric minutes in a metric hour (1 min 26.4 s each)
- 100 metric seconds in a metric minute (0.864 s each)
- 10 days in a metric week (called a dekade)
No country has officially adopted metric time. Given the complexity involved in a changeover from the two universal systems currently used in education and higher technologies, and the practical incompatibility between any two systems, a new adoption would require yet a third universal use: There is no evidence that its adoption is ever likely to occur, beyond dual mode clock novelties. Also, it is necessary to have a concept of both a day and a year, and the two are not in any obvious ratio.
