Hexadecimal time

The hexadecimal time format divides the day either into sixteen or into twice sixteen equal hexidecimal hours.
There are always 256 hexadecimal minutes in a hexadecimal hour and 16 hexadecimal seconds in a hexadecimal minute.

The sixteen hours a day format

The hexadecimal 16H/day time format was first proposed by the Swedish-American engineer John W. Nystrom in 1863.

In 1997, the American Mark Vincent Rogers of www.intuitor.com retake this invention and called it "Hexclock". The proposal of Mr Rogers uses the hexadecimal digit system of 0–9 and A-F, the units of time were reformatted to fit in such a way that was conducive to the 16-digit system.

The conversion from hexclock units of time is as follows:

Intuitor-hextime is also denoted in a different fashion; rather than the conventional colon ( : ), the hexclock uses an underscore ( _ ) between hexhours and hexminutes. For example of use, noon in military time is 12:00, being the halfway point of the day. Translated to hextime, this would be 8_00, as half of the 16-hour set-up is eight hours (12/24 = 8/16). An other example:  8_A6  (≥ 12:58).

The twice sixteen hours a day format

In the year 1989 M. Florencetime from Paris (France) developed a "hexadecimal metric system" for weights and measures, including a time format with 2×16 H/day.

The conversion from the florencetime units is as follows:

Florencetime uses new hexadecimal digits, so-called "omni-literal digits" instead of the current hexadecimal digits (0–9 & A-F), the adopted standard since the middle of the 1950th. In his new proposal, all the sixteen hexadecimal digits are represented by consonants. The odd digits are represented by voiced consonants, zero and the even digits by voiceless consonants. The five vowels, "m" and "n", like the letters "l" and "r" are not used for digits, but "H" can mean sixteen in special uses.

Example:  BK.QQ'q H  =  p.m. 10:30 H.  Other example:  Q.FQ'q H  =  a.m. 0 H 11 min. 15 s.

See also

• Decimal time
• Metric time

External links

Hexclock
John W. Nystrom
Florencetime.net