Era durations.

[Lonecat Nekophrodite]

This is only for Vanilla and Rise and Fall. though i'm not sure how many turns it is for Gathering Storm.
Era durations. Years and number of turns. (as per '500 game turns' rule. standard speed. and this means no 'One more and more and more turns....')

Eras​	Years Beginning​	Year Diff​	Turns Beginning​	Turn Diff
Ancient	4000 BC	N/A	1	N/A
Classical	1000 BC	3000	76	75
Medieval	500 AD	1500	136	60
Renaissance	1350 AD	850	196	60
Industrial	1725 AD	375	256	60
Modern	1890 AD	165	316	60
Atomic	1945 AD	55	366	50
Information	1995 AD	50	416	50
END	2020 AD	25	500	84

Just for a referrence