The purpose of this legislative text is to amend a specific law regarding public holidays in the United States. The main objective is to officially designate Lincoln's Birthday as a legal public holiday and to change the date of Washington's Birthday from the third Monday in February to February 22. Key provisions of this legislation include two main changes. First, it adds Lincoln's Birthday to the list of recognized public holidays. Second, it specifies that Washington's Birthday will now be celebrated on February 22 instead of the previously observed third Monday in February.