Watch Sadisflix. The inauguration of John F. Kennedy as the 35th president of the United States was held on Friday, January 20, 1961, at the East Portico of the United States Capitol in Washington, D.C. This was the 44th inauguration and marked the commencement of John F. Kennedy's and Lyndon B. Johnson's only term as president and vice president. Kennedy was assassinated 2 years, 306 days into this term, and Johnson succeeded to the presidency.