Question: who was the oldest president to be inaugurated
Answer: 03328900000000000 ♠ 9 years , 2 days ) 2018 - 01 - 22 7004261330000000000 ♠ 71 years , 200 days ( 26,133 days ) 44 Obama , Barack Barack Obama 000000001961 - 08 - 04 - 0000 Aug 4 , 1961 000000002009 - 01 - 20 - 0000 Jan 20 , 2009 7004173360000000000 ♠ 47 years , 169 days 000000002017 - 01 - 20 - 0000 Jan 20 , 2017 7004202580000000000 ♠ 55 years , 169 days 00 , 134367 367 days ( 7002367000000000000 ♠ 1 year , 2 days ) 2018 - 01 - 22 7004206250000000000 ♠ 56 years , 171 days ( 20,625 days ) 45 Trump , Donald Donald Trump 000000001946 - 06 - 14 - 0000 Jun 14 , 1946 000000002017 - 01 - 20 - 0000 Jan 20 , 2017 7004257880000000000 ♠ 70 years , 220 days 2018 - 01 - 22 7004288540000000000 ♠ 78 years , 364 days 24,858 2018 - 01 - 22 7004261550000000000 ♠ 71 years , 222 days ( 26,155 days ) # President Birth date Presidency start date Age at start date Presidency end date Age at end date Post-presidency timespan Death date Lifespan