Osun State University UNIOSUN Academic Calendar 2025/2026

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The academic calendar of the Osun State University (UNIOSUN) for the academic session has been released by the authorities of the university.

UNIOSUN Academic Calendar.

📘 Harmattan Semester (1st Semester)

November 2025 – January 2026

Mon 15 Nov 2025 – Session commencement; returning students resume & portal opens
Mon 22 Nov 2025 – New/first-year student registration begins
Sun 28 Nov 2025 – End of academic staff annual leave
Mon 29 Nov 2025 – Lectures commence for all students
Thu 23 Dec 2025 – Mon 3 Jan 2026 – Christmas/New Year break

March – April 2026

Wed 16 Mar 2026 – Matriculation ceremony
Mon 21 – Fri 25 Mar 2026 – Lecture-free (revision) week
Mon 28 Mar – Tue 15 Apr 2026 – Harmattan Semester exams (all levels)
Mon 18 – Sat 23 Apr 2026 – GNS exams
Sat 23 Apr – Sat 7 May 2026 – Semester break

📗 Rain Semester (2nd Semester)

May – August 2026

Fri 6 May 2026 – Portal opens & registration begins for Rain Semester
Mon 8 May 2026 – Lectures resume for all students
Fri 15 Jul 2026 – End of Rain Semester lectures
Mon 18 – Fri 22 Jul 2026 – Lecture-free week
Mon 25 Jul – Tue 12 Aug 2026 – Rain Semester exams
Mon 15 – Fri 20 Aug 2026 – GNS examinations
Sat 20 Aug 2026 – End of Rain Semester exams
Mon 22 Aug 2026 – Academic staff annual leave begins; script marking & results uploads start

🔁 Academic Year Close & New Session Start

Mon 25 Aug 2026 – Conclusion of academic session & start of annual leave
Thu 25 – Sat 27 Sep 2026 – 16th Convocation ceremony
Fri 7 Nov 2026 – End of staff annual leave
Mon 11 Nov 2026 – Resumption for the 2026/2027 academic session begins

🛠️ Why These Dates Matter

Start planning lecture schedules, exam prep, and holidays now
Helps you know when to be present—for matriculation, lectures, exams, and vacations
Key for registering on time before exams and holidays begin

✅ Tips to Stay Organized

Save key dates (resumption, lectures, breaks, exams) to your calendar.
Set reminders about registration windows and lecture-free weeks.
Follow UNIOSUN’s website or notice boards for any amendments.
Monitor the portal for exam results and announcements in April–August.

November, 2021 – January, 2024

Monday 15th November Commencement of 2021/2022, Academic session,
Resumption and e-portal registration for 2021/2022
Harmattan Semester for returning students

Monday 22nd November Opening of e-portal/Registration for New students

Sunday, 28th November End of Annual Leave for Academic Staff

Monday, 29thNovember Commencement of lectures for all students

Thursday, 23rd Dec. – Monday 3rd January, 2022 New Year Break

March, 2024

Friday, 4thMarch Lecture free week

Monday, 14th March-14thApril Harmattan Semester Examinations

April, 2024

Monday, 20th – 23rdApril GNS Examination

Sunday, 24thApril Semester Break/End of Harmattan Semester/Annual Lecture

May, 2024

Friday, 13th May End of Marking of Script/Consideration/Uploading of results.

Friday, 13 – 27thMay Semester Break for Students/e-portal registration for 2021/2022 Rain Semester for all Students

Monday, 30th May Commencement of Lectures for Rain Semester for all Students

August, 2024

Monday, 4th August Annual Lectures 2021/2022 session

Friday, 12thAugust End of lectures for Rain Semester

Monday, 19thAugust Lecture free week/Revision

Monday, 22nd August – Tuesday, 31st August Rain Semester Examinations

September, 2024

Wednesday, 1st August – Friday, 2nd September Rain Semester Examinations continue

Monday, 5th – Friday, 9thSeptember GNS Examination

Friday, 2nd September End of Rain Semester Examinations

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