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Hexadecimal time

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UTC-00:00 Hex Triplet (Update)
Base 60	19:18:00
Base 16	CD_DD_DD

Nystrom'stonal clock-face. The proposed figures on the right are based on rotations of those on the left (assigning value 10 to symbol 9).

A hexadecimal clock-face (using theFlorence meridian)

Hexadecimal time is the representation of thetime ofday as ahexadecimal number in theinterval [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.

History

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This time format was proposed by the Swedish-American engineerJohn W. Nystrom in 1863 as part of histonal system.^[1]

In 1997, the American Mark Vincent Rogers ofIntuitor proposed a similar system of hexadecimal time and implemented it inJavaScript as the Hexclock.^[2]

Implementation

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A day is unity, or1, and any fraction thereof can be shown with digits to the right of the hexadecimalseparator. 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.

Hextime may also be formatted with an underscore separating hexadecimal hours, minutes and seconds; in fullmathematical format this followshex triplet web color scheme.

Hex	Hex (Boardman)	ISO 8601	Comment
.0100	0_10_0	00:05:37.5
.0200	0_20_0	00:11:15
.0400	0_40_0	00:22:30
.0800	0_80_0	00:45:00
.1000	1_00_0	01:30:00	1.5:24 = 1:16 = 0.1
.8000	8_00_0	12:00:00	12:24 = 8:16 = 0.8
.F000	F_00_0	22:30:00	22.5:24 = 15:16 = 0.F
.F800	F_80_0	23:15:00

Conversions

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Hex		hexsec base 16		hexsec base 10		Traditional
1 day	=	10000	=	65536	=	24 h
1 hexadecimal hour	=	1000	=	4096	=	1 h 30 min
1 hexadecimal maxime	=	100	=	256	=	5 min 37.5 s
1 hexadecimal minute	=	10	=	16	=	21.09375 s
1 hexadecimal second	=	1	=	1	=	1.318359375 s
1 second	=	0.C22E4	=	0.75851	=	1 s

References

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^Nystrom, John William (1862).Project of a New System of Arithmetic, Weight, Measure and Coins: Proposed to be Called the Tonal System, with Sixteen to the Base. Lippincott. p. 105.
^"Intuitor Hex Headquarters, The Hex Clock".www.intuitor.com. Retrieved2020-04-02.

External links

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Hexadecimal Time Applet - digital and analog
True Binary Time - local time as a binary number
Analog hexadecimal clock - Florence Mean Time
Minimal Hexadecimal Time Clock - real-time hexadecimal time display

Time

Key concepts

Measurement
andstandards

Chronometry	UTC Universal Time TAI Unit of time Orders of magnitude (time)
Measurement systems	Italian six-hour clock Thai six-hour clock 12-hour clock 24-hour clock Relative hour Daylight saving time Chinese Decimal Hexadecimal Hindu Jain Metric Roman Sidereal Solar Time zone
Calendars	Main types Solar Lunar Lunisolar Gregorian Julian Hebrew Islamic Solar Hijri Chinese Hindu Panchang Maya List
Clocks	Main types astronomical astrarium atomic quantum hourglass marine sundial watch 24-hour wristwatch mechanical stopwatch water-based Cuckoo clock Digital clock Grandfather clock History Timeline

Philosophy of time

Human experience
anduse of time

Time inscience

Geology	Geological time age chron eon epoch era period Geochronology Geological history of Earth
Physics	Absolute space and time Arrow of time Chronon Coordinate time Instant Proper time Spacetime Theory of relativity Time domain Time translation symmetry Time reversal symmetry
Other fields	Chronological dating Chronobiology Circadian rhythms Clock reaction Glottochronology Time geography