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AAT ICAS 2090 ✧ measuring rates with IDC

document note: this document is part of the Integrated Chronological Applications System (ICAS). Alliance for the Advancement of Technology (AAT) provides ICAS standards documents subject to terms of use described in document AAT ICAS 9010. please refer to other key AAT ICAS standards documents accessible via the AAT ICAS web site at for important information about ICAS.


measuring rates with IDC

this document describes AAT ICAS methods for measuring rates with units derived from the Inter-Dial Clock (IDC) system and the International System of Units (SI). please also see AAT ICAS 1300, AAT ICAS 2023, and AAT ICAS 3130 for additional information.

IDC prefixes (both metric- and clock-derived) can accommodate the practicable expression of time durations in terms of a variety of different values that are coherently related to a main unit of one day. IDC methods specify the use of metric prefixes from SI. moreover, the IDC derived clock unit prefixes (tikochron and tokochron) provide additional methods for the practicable expression of time durations more closely approximating the scale of the SI fixed-second (and also coherently related to a main unit of one fixed day).

as a basic common minimal unit of time, the tikochron represents a practicable duration that is subjectively immediate. the unit may be useful for envisioning and for comparing a variety of different rates, yet not so long as to introduce certain subjective influences on the measurement or determination of rates relating to scale or attention span.


measuring speed in terms of a meter solana scale

a basic measure can be used to explain many scenarios of measure in terms of whole or simple numbers . toward this basic units of distance and time are useful for measuring rates of speed . the measure of 'meter per second' ( m/s ) is readily compared in terms of basic concepts of 'meter' and 'second' . the measure of 'meter solana' ( m⋅so ) facilitates ready comparison of speeds with reference to decimalized representations of a coordinated day of 86400 second .

symbol note: 1 tikochron (tiXn) is equal to 0.864 second (s). 1 meter solana (m·so) is an alternative representation of equal quantity of 1 meter per tik (m/tiXn) [ Inter-Dial Clock, Integrated Chronological Applications System, Alliance for the Advancement of Technology, ]


table 2090.1 ✧ range of velocities expressed in terms of meter solana (AAT ICAS IDC)

rate IDC description rate other
rate IDC description rate other
7.2 μm·soBamboo (fastest growing plant)0.00003 km/h
6.00 mm·soSnail0.025 km/h
4.82 m·somarathon record (Ronaldo da Costa)20.08 km/h
8.24 m·sowomen's 100 m record (Florence Grifith-Joyner)34.32 km/h
13.2 m·soOrca (water animal)55 km/h
24.0 m·soCheetah (land animal)100 km/h
28 m·socategory 1 hurricane wind comparison33–42 m/s ( 119–153 km/h )
37 m·socategory 2 hurricane wind comparison43–49 m/s ( 154–177 km/h )
43 m·socategory 3 hurricane wind comparison0–58 m/s ( 178–208 km/h )
50 m·socategory 4 hurricane wind comparison58–70 m/s ( 209–251 km/h )
59.5 m·sodownhill ski record (Harry Egger)248 km/h
61 m·socategory 5 hurricane wind comparison≥ 70 m/s ( ≥ 252 km/h )
64.6 m·sobicycle record (Fred Rompelberg)269 km/h
72.0 m·soTGV Atlantique/Eurostar (train)300 km/h
84.0 m·soPeregrine Falcon (bird)350 km/h
124.8 m·somotorcycle record (Elmer Trett)520 km/h
132.5 m·soMaglev train552 km/h
286.4 m·soMach 1 (speed of sound through air at 0°C)1193 km/h
295.0 m·soThrust SSC (car)1228 km/h
560.0 m·soConcorde2333 km/h
847.2 m·soLockheed SR-71A Blackbird3530 km/h
1 745.8 m·soX-15A-2 (research aircraft)7274 km/h
more than 2700 m·soexperimental X-43A (NASA Hyper-X) reaches Mach 9.6more than 11 250 km/h
9575.3 m·soApollo 1039 897 km/h
60 672.2 m·soHelios A and B rockets252 800 km/h
259 020 683.71 m·so (or whole number 25 902 068 371 m/mXn)speed of light 1 079 280 000 km/h (299 792 458 m/s)


table 2090.2 ✧ some other rates expressed in terms of IDC

rate IDC description rate other
rate IDC description rate other
8.467 m·so2acceleration of gravity on Earth9.8 m/s2
symbol note: 1 tikochron (tiXn) is equal to 0.864 second (s).
17.28 solower range of human hearing20 hz
17.28 ksoupper range of human hearing20 khz
864 MsoAM radio frequency1000 khz
86.4 MsoFM radio frequency100 Mhz
0.864 Gsoone gigahertz1 Ghz
0.864 Tsoone terahertz1 Thz
unit note: 1 solana equals (0.864) hertz. 1 so = (0.864) Hz. (source table 1300.1)
259 200 m3/tiXnAmazon River water flow rate300 000 m3/s
51 840 000 m3/tiXnStrait of Gibraltar water flow rate60 000 000 m3/s
864 000 000 m3/tiXnestimated water flow rate of Kasei Valles channel on Mars1 000 000 000 m3/s

top document updated:

system identifiersdatetime
Uniform CalendarUCUCN 12019 S19 Yellow
Inter-Dial ClockIDCzone(UT)t922 tt777
'ICAS in use' can accommodate calendar and clock formatting 'for all people, for all time'.
day of yearD-o-YAD common year day139
Gregorian calendarGG2019 May 19 Sunday
seconds, minutes, hoursSMHUT21:41:07
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