[[Ponies]] reckon their history according to a system of ages:

||'''Era'''||'''Events'''||
||[[Prehistorical]]||The dawn of modern pony ca. 30000 BE||
||<rowspan=3> [[Preclassical]]||Origins of urbanization and literacy ca. 1600 BE||
||Unification of the [[Unicorn]] Kingdom||
||[[Starswirl the Bearded]] flourished||
||<rowspan=3> [[Classical]]||Unicorn control of the movements of the [[sun]] and [[moon]] ca. 170 BE||
||Founding of [[Equestria]]||
||Coming of [[Discord]] ca. fourth century AE||
||<rowspan=2>[[Royal]]||Rule of legendary princesses [[Celestia]] and [[Luna]]||
||Lunar rebellion, ninth century AE||
||<rowspan=2>[[Solar]]||Rule of Celestia alone||
||Return of [[Nightmare Moon]], nineteenth century AE||
||<rowspan=2>[[Golden Age]]||Return of diarchy||
||Technological progress||
||<rowspan=3>[[Dark Age]]||The [[Catastrophe]], 21st century AE||
||Loss of the [[Elements of Harmony]]||
||Decline of Equestrian Civilization||
||[[Harmonic Era]]||Recognition of Harmonia, 25 Rye-planting 3336 AE||
The epoch is the founding of Equestria. Dates before this are “BE” (Before Equestria), dates after and including the founding are “AE” (After Equestria.) There is a year 0 (0 AE, but no 0 BE).