The UB Academic Calendar 2025‑2026 contains all the dates from application and enrollment deadlines, tuition payment due dates, and course add/drop windows to campus holidays and final exam schedules.
University at Buffalo’s academic year follows a traditional semester system enhanced by an optional Winter Intersession and flexible Summer Sessions:
- Fall and Spring Semesters each span about 15 weeks (14 instructional weeks plus one week of finals).
- Winter Intersession offers a short, 3‑week intensive term in January for makeup or accelerated courses.
- Summer Sessions come in three formats—Session I (5 weeks), Full Summer Session (12 weeks), and Session II (7 weeks), each with its own registration, add/drop, and fee‑payment deadlines to fit your schedule.
Whether you’re mapping out a full‑semester course load, squeezing in a Winter Intersession intensive, or choosing the right Summer Session module, the UB Academic Calendar 2025‑2026 is your go‑to guide to every date and deadline you need to thrive at the University at Buffalo.
Table of Contents
UB Academic Calendar Fall 2025
- UB Fall 2025 classes begin on Monday, August 25, 2025.
- Labor Day is observed on Monday, September 1, 2025; the university will be closed.
- The last day to drop or add classes is Tuesday, September 2, 2025.
- UB Fall Break 2025 is from Monday, October 13, to Tuesday, October 14, 2025. Classes resume on Wednesday, October 15, 2025.
- The 60% participation date is Friday, October 24, 2025.
- The last day to resign from classes is Wednesday, November 12, 2025.
- UB Thanksgiving Break 2025 runs from Wednesday, November 26, to Saturday, November 29, 2025. Classes resume on Monday, December 1, 2025.
- The last day of classes is Monday, December 8, 2025.
- Reading Day is Tuesday, December 9, 2025.
- Final examinations take place from Wednesday, December 10, through Wednesday, December 17, 2025.
UB Academic Calendar Spring 2026
- Classes begin on Wednesday, January 21, 2026. It is the first day of classes.
- The last day to drop or add classes is Wednesday, January 28, 2026.
- UB Spring Break 2026 is scheduled from Monday, March 16, through Saturday, March 21, 2026. Classes resume on Monday, March 23, 2026.
- The 60% participation date is Thursday, March 26, 2026.
- The last day to resign from classes is Tuesday, April 14, 2026.
- The last day of classes is Tuesday, May 5, 2026.
- Reading Day is Wednesday, May 6, 2026.
- Final examinations take place from Thursday, May 7, through Thursday, May 14, 2026.
- Commencement Weekend is held from Friday, May 15, through Sunday, May 17, 2026.
For more on the UB Academic Calendar 2025-2026, visit the University at Buffalo Calendar website.
