Trump to join Biden

in 55 days 

Both

POTUS 46 (Joseph R. Biden)

and

POTUS 47 (Donald John Trump)

will have joined the rare

ranks of those serving as

PRESIDENT at the age of 80

(other man who did so was 

Ronald W. Reagan);

STANDING ALONE :

Donald Trump was oldest to

be sworn in on Jan. 20th of a new

Presidential administration :

78 years, 220 days old since

his birth in Queens, NY City, NY