When is what in the studies?

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

Winter semester 2022/2023

 Lecture period

  • October 10, 2022 - February 3, 2023

First-Semester-Student's Welcome

  • October 4, 2022

Opening of the academic year

  • October 18, 2022

Dies Academicus

  • December 7, 2022

Lecture-free period (Christmas break)

  • December 24, 2022 - January 7, 2023

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

  • tbc

Re-registration deadlines

Winter semester

End of August

Summer semester

End of February

Lecture periods until 2024

Summer semester 2023
April 3, 2023 – July 14, 2023

Winter semester 2023/24
October 9, 2023 – February 2, 2024

Eröffnung des Akademischen Jahres

All application, admission and enrollment deadlines can be found in the Application Deadlines section.

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