Orders of magnitude (time)

This is for comparison purposes, a set of times of different orders of magnitude. The data can often be understood as a "typical"; the converted values are rounded.

Basic unit of time in the International System of Units is 1 second ( unit symbol s ), the symbols t.

More used in the following units:

Shorter times than 10-6 s (1 microseconds )

5.4 · 10-44 s - Planck time. At times this size, the scope of the established physical theories ends. Some extensions assume that the time is quantized on this scale.
2 × 10-22 s - half-life of the isotope nitrogen -10
About 1 as ( 1 × 10-18 s ) - Currently the smallest measurable time interval
80 as ( 8 × 10-17 s ) - shortest so far generated electromagnetic pulses by Attosekundenlaser
1.3 to 2.5 fs ( approximately 2 × 10-15 s ) - Period of visible light
200 fs (2 x 10-13 s ) - fastest chemical reactions, such as reaction of the pigments in the eye to light
333 ps (3.33 · 10-10 s ) - cycle time for a processor with 3 GHz clock frequency

10 - 6s to 10 - 3s ( 1 microseconds to 1 ms)

10-3 sec ( 1 ms) to 1 second

1 s to 10 s

10 s to 100 s

100 s to 103 s ( 16.67 min)

103 s to 104 s ( 16.67 min to 2.778 h)

Approximately 43.3 min - duration of light between the sun and Jupiter
45 min - time for a lesson in Germany
60 minutes = 1 hour (1 h)
80 min - duration of light between the sun and Saturn
90 min - orbital period of space stations
160 min - duration of light between the Sun and Uranus

104 s to 105 s ( 2.778 h to 27.78 h)

About 4.17 h - duration of light between the Sun and Neptune
About 6.77 h - duration of light between the sun and Pluto
8 hours - typical working hours in Western countries; typical daily sleep requirements of adult humans
23 h 56 min 4 s - duration of one revolution of the Earth around its own axis
24 hours = 1 day ( 1 d)

105 s to 106 s ( 27.78 h to 11.6 d)

3,824 d - half-life of the isotope radon -222 ( radon )
5 d - a work week in western countries
Approximately 5.29 d - duration of light between the sun and the planetoid Sedna at its maximum distance from the Sun
7 d = 1 week
10 d - a New week ( décade ) according to the calendar of the French Revolution

106 s to 107 s ( 11.6 d to 116 d)

27.3217 d - a sidereal month
28 d or 29 d - length of February
29 d - average duration of a woman's period
29.53059 d - mean synodic month
30 d = 1 Statutory monthly ( according to § 191 BGB)
30 d - length of the months of April, June, September, November
31 d - length of the months of January, March, May, July, August, October, December
87d 23.3 h - a revolution of the planet Mercury around the Sun

107 s to 108 s ( 116 d to 3.17 a)

224.701 d - a revolution of the planet Venus around the Sun
280 d - average length of a human pregnancy
346,62 d - a darkness year period of the solar and lunar eclipses
353 d - the shortest year in the lunisolar calendar
354.37 d - a Lunar year of a Lunar calendar
365 d - a common year, according to most solar calendars
365.2422 d = 1 Tropical year, the mean solar year
365.2425 d - a Gregorian year, the average calendar year in the Gregorian calendar
365.25 d - a Julian year, the average calendar year in the Julian calendar
365.2564 d - sidereal year, the star- fixed orbital period of the Earth
365.259635864 d - Anomalistisches year, the true orbital period of the Earth
366 d - a leap year according to most solar calendars
385 d - the longest year in the lunisolar calendar
445 d - the Kinky year, the longest year in the known history of mankind
640 d - mean duration of pregnancy of an African elephant
1.88 a - a circulation of Mars around the Sun
3 a - typical bachelor's degree

108 s to 109 s ( 3.17 to a 31.7 a)

4 a - Olympics
4:22 a - period of light between the sun and the nearest star Proxima Centauri
4.60 a - a round of the dwarf planet Ceres around the sun
10 a = 1 decade (decade )
11 a - activity cycle of sunspots
11,87 a - a revolution of the planet Jupiter around the Sun
12.126 a - duration of the " Third Reich " in Germany ( March 23, 1933 - May 8, 1945)
12:32 a - half-life of tritium ( superheavy hydrogen )
13.471 a - period of the Weimar Republic (August 11, 1919 - January 30, 1933 )
16.071 a - reign of Helmut Kohl as Chancellor (October 1, 1982 - October 26, 1998 )
18,03 a - Saros cycle (223 synodic months)
18,613 a - nutation
28 a - Julian calendar period
29.458 a - a round of planet Saturn in the solar

109 s to 1010 s ( 31.7 a to 317 a)

40.988 a - duration of the German Democratic Republic (October 7, 1949 - October 3, 1990 )
47,81 a - period of the German Empire (January 18, 1871 - November 9, 1918 )
80 a - average human life expectancy in the Western world
84.0 a - a round of planet Uranus around the sun
100 a = 1 century ( Hektode )
122 a - highest known human lifespan
164.8 a - a round of Neptune around the sun
247.7 a - a round of the dwarf planet Pluto around the Sun
287.8 a - a round of asteroid (50000) Quaoar around the sun

1010 s to 1011 s ( 317 a to 3169 a)

400 a - Gregorian calendar period
557 a - a round of the dwarf planet Eris around the sun
600 a - period of Ancient Greece
1000 a = 1 millennium (Millennium )
About 1,100 a - duration of the Roman Empire
2400 a - estimated age of the largest currently known living being, a witch ring of Armillaria
About 2,950 a - duration of the kingdom of Abyssinia

1011 s to 1012 s ( 3169 a to 31 689 a)

3800 a - oldest sequoia
4585 a - age of the Great Pyramid of Cheops
5730 a - half-life of the isotope carbon -14 ( radiocarbon )
11,500 a - estimated orbital period of the trans-Neptunian object Sedna around the sun
25,800 a - precession of Earth's axis ( Platonic Year )

Longer times than 1012 s ≈ 31 689 a

About 33,000 a - age of the oldest known cave paintings ( in the Chauvet Cave)
About 160,000 a - age of the species Homo sapiens

4 Ma - estimated average lifetime of a species

226 Ma - orbital period of the solar system around the center of the Milky Way

420 Ma - Age of the air-breathing creatures on earth
703.8 Ma - half-life of the isotope uranium -235 ( discovery of nuclear fission )

3.5 Ga - age of life on earth
About 3.8 Ga - Age of Mare Imbrium
4.468 Ga - half-life of the isotope uranium -238 ( breeder reactor )
4.6 Ga - Age of the Earth
10 Ga - estimated time that a G2 dwarf star (like the sun) spends on the main sequence
13.8 Ga - age of the universe according to the current standard model of cosmology (see also Big Bang )

7.2 · 1024 a - half-life of the isotope tellurium -128 ( slowest decay of all unstable isotopes of all elements )

Quantization (physics) Pasta Exponential decay#Mean lifetime Working time Health effects of radon Year#Sidereal.2C tropical.2C and anomalistic years African bush elephant Olympiad Ceres (dwarf planet) Eris (dwarf planet) Sequoioideae Great Pyramid of Giza Blue giant

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