A is the century when a big blow-up was reported by a lawyer – the younger of a famous uncle-nephew duo.
B is the century when the great saint who we might facetiously dub “Herb” trod the earth.
C is the century in which a Daddy Warbucks lookalike ruled in Europe.
D is the century which saw the birth of the biggest granting of rights.
E is the century of the birth of who many think of as the first reasonable self-actualizing guy.
F is the century, using another appropriate calendar, in which Hikaru runs around the ship brandishing a sword.
You can check your coordinates for this cache at GeoChecker.com.