The table below shows important dates for fall and spring semesters that impact OAIR’s reporting. Please contact us with inquiries about summer or winterim terms.
| Semester | Beginning of Priority Enrollment | First Day of Classes | Census Date | Official Enrollment Data Captured on |
|---|---|---|---|---|
| Fall 2025 | 4/14/2025 | 9/2/2025 | 9/15/2025 | |
| Spring 2025 | 11/18/2024 | 1/21/2025 | 2/3/2025 | 3/3/2025 |
| Fall 2024 | 4/15/2024 | 9/3/2024 | 9/16/2024 | 10/14/2024 |
| Spring 2024 | 11/13/2023 | 1/22/2024 | 2/2/2024 | 3/4/2024 |
| Fall 2023 | 4/10/2023 | 9/5/2023 | 9/18/2023 | 10/16/2023 |
| Spring 2023 | 11/14/2022 | 1/23/2023 | 2/3/2023 | 3/6/2023 |
| Fall 2022 | 4/11/2022 | 9/6/2022 | 9/19/2022 | 10/17/2022 |
| Spring 2022 | 11/15/2021 | 1/24/2022 | 2/4/2022 | 3/7/2022 |
| Fall 2021 | 4/12/2021 | 9/2/2021 | 9/16/2021 | 10/11/2021 |
| Spring 2021 | 11/16/2020 | 1/25/2021 | 2/5/2021 | 3/15/2021 |
| Fall 2020 | 4/13/2020 | 9/2/2020 | 9/16/2020 | 10/12/2020 |
| Spring 2020 | 11/18/2019 | 1/21/2020 | 2/3/2020 | 3/9/2020 |
| Fall 2019 | 4/15/2019 | 9/3/2019 | 9/16/2019 | 10/14/2019 |
| Spring 2019 | 11/12/2018 | 1/22/2019 | 2/4/2019 | 3/4/2019 |
| Fall 2018 | 4/16/2018 | 9/4/2018 | 9/17/2018 | 10/15/2018 |
| Spring 2018 | 11/13/2017 | 1/22/2018 | 2/2/2018 | 2/26/2018 |
| Fall 2017 | 4/17/2017 | 9/5/2017 | 9/18/2017 | 10/16/2017 |
| Spring 2017 | 11/14/2016 | 1/23/2017 | 2/3/2017 | 3/6/2017 |
| Fall 2016 | 4/18/2016 | 9/6/2016 | 9/19/2016 | 10/17/2016 |
| Spring 2016 | 11/16/2015 | 1/25/2016 | 2/5/2016 | 3/7/2016 |
| Fall 2015 | 4/13/2015 | 9/2/2015 | 9/16/2015 | 10/12/2015 |
| Spring 2015 | 11/17/2014 | 1/26/2015 | 2/6/2015 | 3/9/2015 |
| Fall 2014 | 4/14/2014 | 9/2/2014 | 9/15/2014 | 10/13/2014 |
| Spring 2014 | 11/18/2013 | 1/21/2014 | 2/3/2014 | 3/3/2014 |
| Fall 2013 | 4/15/2013 | 9/3/2013 | 9/16/2013 | 10/15/2013 |
| Spring 2013 | 11/19/2012 | 1/22/2013 | 2/4/2013 | 3/4/2013 |
| Fall 2012 | 4/16/2012 | 9/4/2012 | 9/17/2012 | 10/15/2012 |
| Spring 2012 | 11/21/2011 | 1/23/2012 | 2/3/2012 | 3/5/2012 |
| Fall 2011 | 4/18/2011 | 9/6/2011 | 9/19/2011 | 10/17/2011 |
| Spring 2011 | 11/22/2010 | 1/24/2011 | 2/4/2011 | 3/7/2011 |
| Fall 2010 | 4/19/2010 | 9/2/2010 | 9/16/2010 | 10/11/2010 |
| Spring 2010 | 11/23/2009 | 1/25/2010 | 2/5/2010 | 3/8/2010 |
| Fall 2009 | 4/20/2009 | 9/2/2009 | 9/16/2009 | 10/12/2009 |
| Spring 2009 | 11/24/2008 | 1/26/2009 | 2/6/2009 | 3/9/2009 |
| Fall 2008 | 4/21/2008 | 9/2/2008 | 9/15/2008 | 10/13/2008 |
| Spring 2008 | 11/26/2007 | 1/22/2008 | 2/4/2008 | 3/3/2008 |
| Fall 2007 | 4/23/2007 | 9/4/2007 | 9/17/2007 | 10/18/2007 |
| Spring 2007 | 11/27/2006 | 1/22/2007 | 2/2/2007 | 3/5/2007 |
| Fall 2006 | 4/24/2006 | 9/5/2006 | 9/18/2006 | 10/18/2006 |
| Spring 2006 | 11/28/2005 | 1/23/2006 | 2/3/2006 | 3/7/2006 |
| Fall 2005 | 4/25/2005 | 9/6/2005 | 9/19/2005 | 10/24/2005 |
| Spring 2005 | 11/22/2004 | 1/24/2005 | 2/4/2005 | 3/7/2005 |
| Fall 2004 | 4/26/2004 | 9/2/2004 | 9/16/2004 | 10/12/2004 |
| Spring 2004 | 11/17/2003 | 1/26/2004 | 2/6/2004 | 3/8/2004 |
| Fall 2003 | 4/21/2003 | 9/2/2003 | 9/15/2003 | 10/15/2003 |
| Spring 2003 | 11/18/2002 | 1/21/2003 | 2/3/2003 | 3/4/2003 |