In Texas, the standard possession order provides special provisions for extending possession on weekends that either begin with or end with a student holiday or teacher in-service day.  In 2013, Martin Luther King, Jr. holiday is one of the occasions when the non-primary parent gets a little extra time with the child(ren) during their weekend possession.  Specifically, parents that have a Texas Standard Possession Order should be reminded that Martin Luther King, Jr. holiday falls on the Monday following the 3rd weekend of possession in 2013.  Therefore, instead of the period of possession ending at either 6:00 p.m. on Sunday and/or at the time that school resumes on Monday (depending upon whether you have regular standard possession or expanded standard possession) the weekend period of possession does not end until 6:00 p.m. on Monday, January 21, 2013.