 Many U.S. states have adopted some version of the "Presidents Day" name.The perception that the name was changed stems from the fact that the act placed federal observance of Washington's Birthday in the week of February 15 to 21 and, since that week always falls between Lincoln's birthday (February 12) and Washington's (February 22), but never includes either date, popular references have given rise to the title, which recognizes both Presidents.a dozen U.S. states officially refer to the holiday as "Presidents' Day."