About OPU
| Event | Nakamozu/Rinku | Habikino | |
|---|---|---|---|
| April 2011 | Beginning of First Semester | 4/1 | |
| Orientation for New Students | 4/4 | ||
| Entrance Ceremony Orientation (campus Life related) | 4/6 | ||
| Orientation (by School) | 4/7 | NA | |
| Spring Break | 4/1 - 4/7 | ||
| Beginning of Class | 4/8 | ||
| Registration for Fist Semester | 4/8 - 4/15 | ||
| Medical Check-up | (Na)4/11 - 4/15 (Ri)4/25 ・ 4/26 | 4/7 | |
| Cancellation period of registered GPA subject(s) | 4/18 - 4/19 | ||
| May | The 50th Yuko-sai (Student Festival) | 5/27 - 5/29 (No class on 5/27) | |
| Sub for Friday class (yearly adjustment) | 5/30 | NA | |
| June | The 36th Joint Sports Competition (vs. Osaka City University) | 6/11 - 6/12 | |
| July | The 59th Joint Sports Competition (vs. Tokyo Metropolitan University) | 7/1 - 7/3 (No class on 7/1) | 7/1 - 7/3 (NA) |
| First Semester Exams | 7/26 - 8/8 | 8/2 - 8/8 | |
| August | Summer Holidays | 8/11 - 9/30 | |
| September | Release of School Record | 9/22 - | |
| Registration for Second Semester | 9/22 - 10/7 | ||
| End of First Semester | 9/30 | ||
| October | Beginning of Second Semester | 10/1 | |
| Beginning of Class Entrance Ceremony (Graduate School) | 10/3 | ||
| Cancellation period of registered GPA subject(s) | 10/11 - 10/12 | 10/11 - 10/13 | |
| Anji-sai (Student Festival) | - | 10/22 - 10/23 | |
| November | Sub for Friday class (yearly adjustment) | 11/1 | |
| The 63rd Shirasagi-sai (Student Festival) | 11/4 - 11/6 (No class on 11/4) | ||
| Sub for Friday class (yearly adjustment) | 11/9 | NA | |
| The 42nd Joint Sports Competition of Kansai Six Public Universities | 11/11 - 11/13 (No class on 11/11) | 11/11 - 11/13 (NA) | |
| December | Sub for Friday class (yearly adjustment) | 12/27 | NA |
| Winter Holidays | 12/29 - 1/9 | ||
| January2012 | Beginning of Class | 1/10 | |
| No class on 1/13 (Entrance Exam) | 1/13 | NA | |
| Second Semester Exams | 1/30 - 2/10 | 2/6 - 2/10 | |
| March | Release of School Record | 3/5 - | |
| Commencement | 3/23 | ||
| Registration for First Semester2012 | 3/26 - 4/13 | ||
| End of Second Semester | 3/31 | ||