Which Amendment changed the date the president takes the oath of office from March 4 to January 20?

20th Amendment ratified 1/23/1933 Realizing that the severity of the Great Depression required prompt action, there was widespread agreement that inauguration and installation of newly elected Congressmen and Presidents should be moved forward from the traditional March 4th date. When first enacted, it was a time when people travelled by horseback or horse-drawn conveyance. The age of the automobile, improved train travel, and even the nascent airlines made such a delay unnecessary.