Final answer:
Inauguration Day, when the President officially takes office, is typically held on January 20th. Abraham Lincoln and Joe Biden are examples of previous Presidents who were sworn in on this day.
Step-by-step explanation:
Inauguration Day, when the President officially takes office, is typically held on January 20th. On this day, the President-elect is sworn in and delivers an inaugural address. This tradition has been followed since the early days of the United States. For example, Abraham Lincoln was sworn in as President on March 4, 1861, and Joe Biden took the oath of office on January 20, 2021.