Academic Calendar
Keep track of important academic dates and deadlines.
Summer Sessions 2026
| Date | Description |
|---|---|
| May 26 | First day of classes - Summer 2026 |
| May 29 | Last day to add a course - Summer 1 |
| May 29 | Last day to add an independent study or internship - Summer 1 |
| May 29 | Last day to change a course grading method - Summer 1 |
| May 29 | Last day to change a course section - Summer 1 |
| May 29 | Last day to drop a course - Summer 1 |
| June 3 | Last day to add a course - Full summer |
| June 3 | Last day to add an independent study or internship - Full Summer |
| June 3 | Last day to change a course grading method - Full Summer |
| June 3 | Last day to change a course section - Full Summer |
| June 3 | Last day to drop a course - Full summer |
| June 19 | Juneteenth - no classes |
| June 23 | Last day to withdraw from a course - Summer 1 |
| June 30 | CONVERSION DAY - Friday classes meet on this day |
| June 30 | Last day of classes - Summer Session 1 |
| July 1 - 5 | Independence Day break - no classes |
| July 6 | First day of classes - Summer Session 2 |
| July 9 | Last day to add a course - Summer 2 |
| July 9 | Last day to add an independent study or internship - Summer 2 |
| July 9 | Last day to change a course grading method - Summer 2 |
| July 9 | Last day to change a course section - Summer 2 |
| July 9 | Last day to drop a course - Summer 2 |
| July 24 | Last day to withdraw from a course - Full summer |
| July 31 | Last day to withdraw from a course - Summer 2 |
| August 9 | Last day of classes - Summer 26 |
Additional Calendars
This calendar does not apply to Adelphi International (AUI) General English Language, Special Sessions courses or Online Programs for Sport Management, Nutrition, Health Informatics, Social Sciences, and other Online programs in the College of Professional and Continuing Studies. For those programs, please see the following calendars:
All dates are subject to change at the university’s discretion.
Those who need to be absent for religious observances, please read the Exam/Assignment Absence Policy.
Full or partial financial liability may be incurred for any drops once the semester has begun. Consult the university before dropping classes.