Hexadecimal time is the representation of the time of day as a hexadecimal number in the interval [0,1). The day is divided into 1016 (1610) hexadecimal hours, each hour into 10016 (25610) hexadecimal minutes, and each minute into 1016 (1610) hexadecimal seconds. == HistoryEdit == Hexadecimal time may have been used during the Tang Dynasty (7th-10th centuries) in China. This time format was proposed by the Swedish-American engineer John W. Nystrom in 1863 as part of his tonal system. In 1997, the American Mark Vincent Rogers of Intuitor proposed a similar system of hexadecimal time and implemented...

Decimal time is the representation of the time of day using units which are decimally related. This term is often used specifically to refer to French Revolutionary Time, which divided the day into 10 decimal hours, each decimal hour into 100 decimal minutes and each decimal minute into 100 decimal seconds, as opposed to the more familiar standard time, which divides the day into 24 hours, each hour into 60 minutes and each minute into 60 seconds. The main advantage of a decimal time system is that, since the base used to divide the time is the same as the one used to represent it, the whole time...

Metric time is the measure of time interval using the metric system, which defines the second as the base unit of time, and multiple and submultiple units formed with metric prefixes, such as kiloseconds and milliseconds. It does not define the time of day, as this is defined by various time scales, which may be based upon the metric definition of the second. Other units of time, the minute, hour, and day, are accepted for use with the modern metric system, but are not part of it. == HistoryEdit == Although part of the decimal metric system, the second derives its name from the sexagesimal system...