Lincoln’s Birthday is a legal, public holiday in some U.S. states, observed on the anniversary of Abraham Lincoln’s birth on February 12, 1809 in Hodgensville, Kentucky.  Connecticut, Illinois, Indiana, Ohio, Missouri, and New York observe the holiday.

In other states, Lincoln’s birthday is not celebrated separately, as a stand-alone holiday. Instead Lincoln’s Birthday is combined with a celebration of President George Washington’s birthday (also in February) and celebrated either as Washington’s Birthday or as Presidents’ Day on the third Monday in February, simultaneously with the Federal holiday.

Source: Wikipedia