In 1973 This Week in History (January 20 and thereabouts)

According to Michael Beschloss (Presidential historian) ---

within a period of 72 hours

in 1973 this week

POTUS Richard Milhous Nixon was re-inaugurated (his VP was Spiro Agnew);

POTUS LBJ (Lyndon Baines Johnson) had died;

the SCOTUS decision Roe v. Wade had been decided;

and a "Vietnam Peace Settlement" had been announced.