Fall 2020
| DATE | EVENT |
| Monday, July 27 – Thursday, July 30, 2020 | Orientation Week (1st yr DO) – Lebanon Campus |
| Monday, July 27 – Thursday, August 6, 2020 | Orientation Week (1st yr DO) – Pomona Campus |
| Friday, August 7, 2020 | Convocation & White Coat Ceremony – Pomona Campus |
| Monday, August 10, 2020 | Fall Classes Commence |
| Monday, September 7, 2020 | Labor Day Holiday |
| Tuesday, September 8, 2020 | Classes Resume |
| Wednesday, November 11, 2020 | Veteran’s Day |
| Thursday, November 12, 2020 | Classes Resume |
| Thursday, November 26-27, 2020 | Thanksgiving Holiday Recess |
| Monday, November 30, 2020 | Classes Resume |
| Friday, December 18, 2020 | Last Day of Fall Semester (1st yr DO) |
| Monday, December 21, 2020 – Friday, January 1, 2021 | Winter Break (DO program) |
Spring 2021
| DATE | EVENT |
|---|---|
| Monday, January 4, 2021 | Spring Semester Class Begins |
| Monday, January 18, 2021 | Martin Luther King Jr. Holiday |
| Tuesday, January 19, 2021 | Classes Resume |
| Monday, February 15, 2021 | President’s Day Holiday |
| Tuesday, February 16, 2021 | Classes Resume |
| Monday, March 29 – Friday, April 2, 2021 | Spring Break (DO2023) |
| Monday, April 12 – Friday, April 16, 2021 | Spring Break (DO2024) |
| Monday, March 29, 2021 | Classes Resume |
| Tuesday, May 18, 2021 | Commencement (DO) – Pomona Campus |
| Friday, May 21, 2021 | Commencement (DO) – Lebanon Campus |
| Monday, May 31, 2021 | Memorial Day Holiday |
| Tuesday, June 1, 2021 | Classes Resume |
| Friday, June 4, 2021 | Last Day of Spring Semester (1st yr DO) |
| Friday, June 18, 2021 | Last Day of Spring Semester (2nd yr DO) |