This map is a timeline, or a series of 45 parallel timelines, of the lives of the 45 individuals who have been President of the United States.
The timeline merely shows when each of these individuals would have been alive, allowing for a clear visual representation of which presidents, future and past, were alive at the same time and during each presidents' presidency.
Signs indicate the dates of each presidents' births, birthdays, and deaths, as well as the beginning of presidential terms and ends of presidencies.
The broader timeline begins in 1732, the birthyear of George Washington, and runs up to modern day.

The scale on this timeline is each block representing a month.
Ideally this project will be updated on:

• The first of each month.
  
• The birthday of an incumbent or living former president.
  
• The death of an incumbent or living former president.
  
• The swearing in of a president.

Upon the swearing in of a new president (assuming it is not a non-consecutive term president like Grover Cleveland), a lifeline (timeline of that individual's life) will be added to the broader timeline.