Final answer:
Presidents' Day is primarily to honor George Washington, the first U.S. president, but also serves to honor all past and present U.S. presidents.
Step-by-step explanation:
The significance of Presidents' Day, also known as Washington's Birthday, is primarily to honor George Washington, the first U.S. president.
While there are other presidents who are also honored on this day, such as Abraham Lincoln, the primary focus is on Washington.
Presidents' Day is a day to pay tribute to the leadership and contributions of all past and present U.S. presidents, but it holds special significance in honoring George Washington as the Father of our Country.