Hexadecimal time
The hexadecimal time format divides the day either into sixteen or into twice sixteen equal hexadecimal hours.
There are always 256 hexadecimal minutes in a hexadecimal hour and 16 hexadecimal seconds in a hexadecimal minute.
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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 – without giving sources – and called it "Hexclock", pretending his own originality. Mr Rogers’s proposal uses the hexadecimal digit system of 0-9 & 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:
| 1 hexhour | = | 675 s | × | 8 | = | 1 H 30 | |
| 1 hexminute | = | 675 s | ÷ | 32 | ≥ | 21.09 s | |
| 1 hexsecond | = | 675 s | ÷ | 512 | ≤ | 1.32 s |
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).
Thus, the conception of hexadecimal time once sixteen hours a day implicates only eight mean longitudinal great circles. Furthermore, the congruency to the familiar cardinal positions of all the three pointers at 3, 9, 12 o'clock is deleted. In this format, the position of the pointers of a hexadecimal, analogical clock is identical to an ordinarily clock only once a day, at midnight.
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:
| one hexadecimal hour | = | 675 s | × | 4 | = | 0 H 45 | |
| one hexadecimal minute | = | 675 s | ÷ | 64 | ≤ | 10.55 s | |
| one hexadecimal second | = | 675 s | ÷ | 1024 | ≥ | 0.659 s |
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 1950s. 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.
| Current standard : | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Omni-literal digits : | Q | B | P | V | F | Z | S | D | T | J | C | G | K | Y | X | W |
Even though it's inventor, since 1989, setted value on the possiblity to be able to proof always his anteriority, deliberately, he decided to renounce to any industrial patent. This, for not create new proprietary standards for any measuring instrument for all the new units of his "hexadecimal metric system" (SMH) or any other use.
Example: BK.QQ'q H = p.m. 10:30:00 H. Other example: a.m. 00:11:15 H = Q.FQ'q H.
Next to the latitudes, Florencetime defined - in concordance with the hexadecimal time - also hexadecimal longitudes. The main meridian zero degree hexadecimal is identical to the meridian 11°15' East of Greenwich and this meridian also crosses the center of the city of Florence in Tuscany; therefore : "Florencetime". The meridian opposite to Florence ± H°QQ'q (= 168°45' W of Greenwich) passes in the middle of Bering Strait, eastern to Diomede Islands. In the new proposed hexadecimal cartographic coordinate system, the sexagesimal main meridian of Greenwich is only one of the 32 hexadecimal main meridians spanned from pole to pole.
In Europe, the Florence meridian (± Q°QQ'q), coming from North Pole by western coast of Svalbard, traverses Norway, Sweden, Denmark, Germany, Austria and Italy. In Africa, it passes to Tunisia, Libya, even to Algeria in it's extremely south-east, then Niger, Nigeria, Cameroon and Equatorial Guinea. It crosses the equator with a continental point of confluence in Gabon and leaves Africa at the northern coast of Congo-Brazzaville, going to South Pole in Antarctica by southern Atlantic Ocean.
Perpendicular to the longitudinal great circle Gabon - Fairway Rock Island, there is the longitudinal great circle Sumatra (in Asia) - Ecuador (in South America). This one crosses the equator of Earth even with two continental points of confluence, respectively at +T°QQ'q (= 101°15' E Greenwich) and at -T°QQ'q (= 78°45' W of Greenwich).
The meridian, zero degree hexadecimal, of Florence defines and postulates also a new Universal Time, the so-called : UTC.F = UTC(.G) + 2700 seconds.
See also
External links
Hexclock
John W. Nystrom
Florencetime.net