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Hexadecimal time is the representation of the time of day as a hexadecimal number in the interval [0,1).

Florencetime.jpg

 

The day is divided in 1016 (sixteen) hexadecimal hours, each hour in 10016 (two hundred and fifty-six) hexadecimal minutes and each minute in 1016 (sixteen) hexadecimal seconds.

This time format was first proposed by the Swedish-American engineer John W. Nystrom in 1863. In 1997, the American Mark Vincent Rogers of Intuitor, unaware of Nystrom's system, proposed a similar system of hexadecimal time and implemented it in JavaScript as the Hexclock.

A day is unity, or 1, and any fraction thereof can be shown with digits to the right of the hexadecimal separator.
So the day begins at midnight with .0000 and one hexadecimal second after midnight is .0001.
Noon is .8000 (one half), one hexadecimal second before was .7FFF and one hexadecimal second before next midnight will be .FFFF.

Intuitor-hextime may also be formatted with an underscore separating hexadecimal hours, minutes and seconds. For example:

01:30:00 = 1_00_0 = .1000 ( 1.5÷24 = 1÷16 = 0.1 )
12:00:00 = 8_00_0 = .8000 ( 12÷24 = 8÷16 = 0.8 )
22:30:00 = F_00_0 = .F000 ( 22.5÷24 = 15÷16 = 0.F )

1 day = 1 0 , 0 0 0 hexsec = 6 5 , 5 3 6 hexsec = 24 h
1 hexadecimal hour = 1 , 0 0 0 hexsec = 4 , 0 9 6 hexsec = 1 h 30 min
1 hexadecimal maxime = 1 0 0 hexsec = 2 5 6 hexsec = 5 min 37.5 sec
1 hexadecimal minute = 1 0 hexsec = 1 6 hexsec 21.09 sec
1 hexadecimal second = 1 hexsec = 1 hexsec 1.32 sec

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