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Year

Overview#

Year is the orbital period of "time" it takes for the Earth moving in its orbit around the Sun.[1]

These of course do not take into account a leap year

Non-SI abbreviationShort for...SI-prefixed equivalentComments and examples
kyrkilo yearska* Thousand years
myr
Myr
million years
Mega years
Ma* Million years
byrbillion yearsGa* Billion years ( thousand million  years)
kyakilo years agoka ago* Appearance of Homo sapienscirca 200 kya
* Out-of-Africa migrationcirca 60 kya
* Last Glacial Maximumcirca 20 kya
* Neolithic Revolutioncirca 10 kya
mya
Mya
million years ago
Mega years ago
Ma ago* Pliocene , 5.3 to 2.6 mya
* The  last geomagnetic reversal  was 0.78 mya[30]
* The ( Eemian StageIce Age  started 0.13 mya
* The  Holocene  started 0.01 mya
bya
Gya
billion years ago
giga years ago
Ga ago* oldest  Eukaryotes , 2 bya
* formation of the  Earth , 4.5 bya
* Big Bang , 13.8 bya

More Information#

There might be more information for this subject on one of the following:
  • [#1] - Year - based on information obtained 2017-10-14-