It's not quite as weird as Jefferson and Adams dying on the same day (4 July 1826), but it's weird enough: both Archibald Coxand Sam Dash appear to have died tonight.
Cox was the special Watergate prosecutor whom President Nixon had fired in the infamous "Saturday Night Massacre" of 20 October 1973, along with Attorney General Elliot Richardson and Deputy Attorney General William Ruckelshaus. Neither man would consent to Nixon's order to fire Cox, so he fired both of them and had Robert Bork fire Cox.
Dash was the chief counsel of the Senate Watergate Committee. His investigations had as much to do with bringing down Nixon as anybody's.
A curious bit of synchronicity for a bored guy to notice on another Saturday night some 30 years on.