School holidays, which are not counted as instructional days, typically include Labor Day, Thanksgiving and Thanksgiving Friday (two days although many systems take the Wednesday and/or the following Monday off as well), a winter break beginning on or before Christmas Eve through the day after New Year's Day (about 10 days), Martin Luther King, Jr. Day, Presidents' Day, spring break during the Western Christian Holy Week and sometimes the day after Easter (five or six days), and Memorial Day. Some schools also observe one or more of Columbus Day, Veteran's Day, Lincoln's Birthday, Washington's Birthday, and other state or local holidays. Some schools have additional holidays for students that are workdays for the staff, such as parent–teacher conference days