AAO does NOT observe U.S. federal holidays.
*Teachers may set an earlier date for work. Classes close on this date.
| Event | 2025–2026 | 2026-2027 |
|---|---|---|
| Opening Day (Classes open in Canvas) | Aug 18, 2025 | Aug 17, 2026 |
| First Week of Classes | Aug 25, 2025 | Aug 24, 2026 |
| Thanksgiving Break | Nov 24–28, 2025 | Nov 23–27, 2026 |
| Winter Break | Dec 22–Jan 9, 2026 | Dec 21–Jan 8, 2027 |
| Last Date to Submit 1st Sem Work* | Jan 9, 2026 | Jan 8, 2027 |
| Second Semester Starts | Jan 12, 2026 | Jan 11, 2027 |
| First Semester Grades Available | Jan 23, 2026 | Jan 22, 2027 |
| Spring Break | Mar 16–20, 2026 | Mar 15–19, 2027 |
| Last Week of Classes: (See course syllabus) | May 8 or 15, 2026 | May 7 or 14, 2027 |
| Last Date for 2nd Sem Work* | May 22, 2026 | May 21, 2027 |
| Final Grades Available | May 31, 2026 | May 31, 2027 |
| Mini-Course Schedule | ||
| Fall 1 | Aug 25–Oct 10, 2025 | Aug 24–Oct 9, 2026 |
| Fall 2 | Oct 20–Dec 12, 2025 | Oct 19–Dec 11, 2026 |
| Winter | Jan 12–Feb 27, 2026 | Jan 11–Feb 26, 2027 |
| Spring | Mar 23–May 8, 2026 | Mar 22–May 7, 2027 |
| Summer 1 | May 11–Jun 26, 2026 | May 10–Jun 25, 2027 |
| Summer 2 | Jul 6–Aug 21, 2026 | Jul 5–Aug 20, 2027 |