When
is Constitution Day 2013? When is Constitution Week 2013?
Constitution Day falls on September 17th of each year. When Constitution Day falls on a weekend or on another holiday, schools and other institutions observe the holiday on an adjacent weekday. In 2011 and 2016, September 17th falls on a Saturday, so Constitution Day is observed Friday, September 16th.

| Year |
Constitution Day |
Constitution Week |
| 2010 |
Friday, September 17 |
September 17 - 23 |
| 2011 |
Friday, September 16 (observed) |
September 16 - 22 |
| 2012 |
Monday, September 17 |
September 17 - 23 |
| 2013 |
Tuesday, September 17 |
September 17 - 23 |
| 2014 |
Wednesday, September 17 |
September 17 - 23 |
| 2015 |
Thursday, September 17 |
September 17-23 |
| 2016 |
Friday, September 16 (observed) |
September 16 - 22 |
|