When is the new president of the US Sworn in?

Since the adoption of the 20th Amendment in 1933, a new President is sworn in at noon on the 20th day of January next following his election. Before (and including) 1933, new Presidents took office on March 4, The only exception having been George Washington's first inaugural in 1789. Washington did not get the news of his election in time for the official date, and so was not sworn in until April 30.