Time Period Confirmation?

I'm rewatching "The Sundering" with my younger brother, and at 9:16 there's a sign - the "dye! dye! dye!" one. And it says:

I know we're given the time via number of years in epochs, but are we being given a beginning time to work from in terms of our years??? Like, an our-world-comparable time period for when WFS takes place??? 😱😱 If that sign is accurate, it means WFS takes place (our time) sometime after 1802, though we don't know how long after.