!!! Overview
[{$pagename}] is the orbital period of "[time]" it takes for the Earth moving in its orbit around the Sun.[1]

* [{$pagename}] is 12 [Months]
* [{$pagename}] is 52 [Weeks]
* [{$pagename}] is 365.24 [Days]
* [{$pagename}] is 8,765 [Hours]
* [{$pagename}] is 526,000 [Minutes]
* [{$pagename}] is 31.6 [million] [seconds]

These of course do not take into account a [leap year]

* Ten [{$pagename}]s is a [Decade]
* [Hundred] [{$pagename}]s is a [Century]
* [Thousand] [{$pagename}]s is a [Millennium]
||Non-SI abbreviation||Short for...||[SI|[International System of Units]-prefixed equivalent||Comments and examples
|''kyr''|kilo years|ka|* Thousand years
|''myr'' \\ ''Myr''|million years \\ Mega years|Ma|* Million years
|''byr''|billion years|Ga|* Billion years ( [thousand million|https://en.wikipedia.org/wiki/Long_and_short_scales]  years)
|''kya''|kilo years ago|ka ago|* Appearance of ''Homo sapiens'', ''circa'' 200 kya\\*  [Out-of-Africa migration|https://en.wikipedia.org/wiki/Out-of-Africa_migration] , ''circa'' 60 kya\\*  [Last Glacial Maximum|https://en.wikipedia.org/wiki/Last_Glacial_Maximum] , ''circa'' 20 kya\\*  [Neolithic Revolution|https://en.wikipedia.org/wiki/Neolithic_Revolution] , ''circa'' 10 kya
|''mya'' \\ ''Mya''|million years ago \\ Mega years ago|Ma ago|*  [Pliocene|https://en.wikipedia.org/wiki/Pliocene] , 5.3 to 2.6 mya\\* The  [last geomagnetic reversal|https://en.wikipedia.org/wiki/Brunhes%E2%80%93Matuyama_reversal]  was 0.78 mya%%sup [[30]/%\\* The ( [Eemian Stage|https://en.wikipedia.org/wiki/Eemian_Stage] )  [Ice Age|https://en.wikipedia.org/wiki/Ice_Age]  started 0.13 mya\\* The  [Holocene|https://en.wikipedia.org/wiki/Holocene]  started 0.01 mya
|''bya'' \\ ''Gya''|billion years ago \\ giga years ago|Ga ago|* oldest  [Eukaryotes|https://en.wikipedia.org/wiki/Eukaryotes] , 2 bya\\* formation of the  [Earth|https://en.wikipedia.org/wiki/Earth] , 4.5 bya\\*  [Big Bang|https://en.wikipedia.org/wiki/Big_Bang] , 13.8 bya
!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Year|Wikipedia:Year|target='_blank'] - based on information obtained 2017-10-14-