The management of Osun State University (UNIOSUN) has released the approved academic calendar for the 2025/2026 academic session.

The calendar contains important dates for new and returning undergraduate students, including resumption, registration, lectures, examinations, breaks, matriculation, convocation and other academic activities.

Students are advised to take note of the dates and complete all registration and fee payment requirements within the approved timelines.

UNIOSUN Resumption Date 2025/2026

Fresh students will resume on Monday, 10 November 2025.

Returning students will resume on Monday, 17 November 2025, which is also the date for the commencement of lectures and online course registration.

UNIOSUN Harmattan Semester Academic Calendar

The first semester will run from November 2025 to March 2026.

Date

Activity

Monday, 10 November 2025

Fresh students resume

Monday, 10 November to Thursday, 13 November 2025

Orientation programme for fresh students

Friday, 14 November 2025

Academic staff resume from annual leave

Monday, 17 November 2025

Returning students resume

Monday, 17 November 2025

Lectures and online course registration begin

Thursday, 4 December 2025

Matriculation ceremony

Monday, 22 December 2025 to Sunday, 4 January 2026

Christmas and New Year break

Monday, 5 January 2026

Lectures resume after the holiday

Friday, 27 February 2026

Lecture free week begins

Monday, 2 March to Friday, 20 March 2026

Harmattan semester examinations

Monday, 16 March to Friday, 20 March 2026

General Studies examinations

Monday, 23 March to Friday, 10 April 2026

Inter semester break and marking of examination scripts

UNIOSUN Rain Semester Academic Calendar

The second semester will begin in April 2026 and end in September 2026.

Date

Activity

Monday, 13 April 2026

Resumption, course registration and lectures begin

Friday, 1 May 2026

Late registration begins

Friday, 8 May 2026

Registration portal closes

Friday, 3 July 2026

Lectures end

Monday, 6 July to Friday, 10 July 2026

Lecture free week

Monday, 13 July to Friday, 31 July 2026

Rain semester examinations

Friday, 7 August 2026

Marking and grading of scripts end

Monday, 14 September 2026

Annual leave for academic staff begins

Thursday, 24 September 2026

Convocation ceremony

Friday, 30 October 2026

Summer School ends

What Should Students Know About Registration?

Students are expected to pay their school fees before registering their courses.

Late registration will begin on Friday, 1 May 2026, and the registration portal will close on Friday, 8 May 2026.

Students who fail to register before the portal closes may not be allowed to participate in the academic session.

What Is Required Before Writing Examinations?

Students must complete their course registration and settle all approved fees before the examinations.

They will also be required to present a valid examination clearance card before being allowed into the examination hall.

When Will the General Studies Examinations Hold?

The General Studies examinations will take place from Monday, 16 March to Friday, 20 March 2026.

Students offering General Studies courses should confirm their examination venue and schedule before the examination period.

What Should Students Do Before the Session Begins?

Students are advised to:

  • Pay school fees early.

  • Complete course registration before the deadline.

  • Keep track of examination dates.

  • Prepare all required documents before resumption.

  • Follow the university's approved academic calendar throughout the session.

Frequently Asked Questions

Q: Has UNIOSUN released the 2025/2026 academic calendar?
A: Yes. Osun State University has released the approved academic calendar for the 2025/2026 academic session.

Q: When will fresh students resume?
A: New students will resume on Monday, 10 November 2025.

Q: When will returning students resume?
A: Returning students will resume on Monday, 17 November 2025.

Q: When is the matriculation ceremony?
A: The matriculation ceremony will hold on Thursday, 4 December 2025.

Q: When will the Harmattan semester examinations start?
A: Harmattan semester examinations will run from Monday, 2 March to Friday, 20 March 2026.

Q: When will the Rain semester begin?
A: The Rain semester will begin on Monday, 13 April 2026.

Q: When is the UNIOSUN convocation ceremony?
A: The convocation ceremony is scheduled for Thursday, 24 September 2026.

Q: What happens if a student does not complete course registration before the deadline?
A: Students who fail to complete registration before the portal closes may not be allowed to continue with the academic session.