Key Semester Dates
As is common at many universities, the academic year at the University of Bonn is divided into two half-year semesters. The winter semester actually begins in autumn, while the summer semester begins in the spring. The formal semester start dates are not the same as the lecture periods, which change from year to year.
Academic Calendar
Semester start
Winter semester
October 1 – March 31
Summer semester
April 1 – September 30
Lecture Periods and Deadlines
Summer semester 2023
Lecture period
- April 3 - July 14, 2023
Dies Academicus
- May 24, 2023
Lecture-free period (Pentecost break)
- May 29, - June 2, 2023
Unifest
- July 8, 2023
Winter semester 2023/24
Lecture period
- October 9, 2023 - February 2, 2024
First-Semester-Student's Welcome
- October 4, 2023
Opening of the academic year
- October 18, 2023
Dies Academicus
- December 6, 2023
Lecture-free period (Christmas break)
- December 27, 2023 - January 6, 2024
Re-registration deadlines
Winter semester
August, 31
Summer semester
February, 28/29
Lecture periods until 2024
Winter semester 2023/24
October 9, 2023 – February 2, 2024
Summer semester 2024
April 8, 2024 – July 19, 2024
Winter semester 2024/25
October 7, 2024 – January 31, 2025
Summer semester 2025
April 7, – July 18, 2025
All application, admission and enrollment deadlines can be found in the Application Deadlines section.