Let's be fair, I was a bad person

I'm just tryna gear up for possible negative(extreme) outcomes of the e generation...

If gen x = 20 yrs from 1960 to 1980, what would gen e = ?
gen y = 1980 - 2000
gen z = 2000 - 2020

The last generation.
What would gen E be?

gen   = 1660 - 1680
gen   = 1680 - 1700
gen   = 1700 - 1720
gen   = 1720 - 1740
gen   = 1740 - 1760
gen   = 1760 - 1780
gen   = 1780 - 1800
gen   = 1800 - 1820
gen   = 1820 - 1840
gen   = 1840 - 1860
gen s = 1860 - 1880
gen t = 1880 - 1900
gen u = 1900 - 1920
gen v = 1920 - 1940
gen w = 1940 - 1960
gen x = 1960 - 1980
gen y = 1980 - 2000
gen z = 2000 - 2020