Academic Calendar

Semester dates / lectures

The Autumn Semester (HS) begins in week 38 (mid-September) and ends in week 51 (just before Christmas). It comprises 14 weeks.

The Spring Semester (FS) begins in week 8 (mid-February) and ends in week 22 (end of May). It lasts 15 weeks, including a week without classes after Easter.

The lecture-free period is reserved for exam preparation and exam sessions (winter exam session: calendar weeks 4 - 7 / summer exam session: calendar weeks 32 - 35).

The administrative year (ETH-internal use only) is divided into Spring Semesters (February 1 to July 31) and Autumn Semesters (August 1 to January 31).

Autumn Semester 2024 Monday, 16.09.2024 - Friday, 20.12.2024 Show
Calendar weeks 38 - 51
Spring Semester 2025 Monday, 17.02.2025 - Friday, 30.05.2025 Show
Calendar weeks 8 - 22
Autumn Semester 2025 Monday, 15.09.2025 - Friday, 19.12.2025 Show
Calendar weeks 38 – 51
Spring Semester 2026 Monday, 16.02.2026 - Friday, 29.05.2026 Show
Calendar weeks 8 - 22
Autumn Semester 2026 Monday, 14.09.2026 - Friday, 18.12.2026 Show
Calendar weeks 38 - 51
Spring Semester 2027 Monday, 22.02.2027 - Friday, 04.06.2027 Show
Calendar weeks 8 - 22
Autumn Semester 2027 Monday, 20.09.2027 - Friday, 24.12.2027 Show
Calendar weeks 38 – 51 Kein Unterricht ab 12 Uhr, Geb?ude geschlossen

Overview semester dates

Without additional information the individual opening and and closing times of the ETH buildings apply.

2024

End of Autumn semester Friday, 20.12.2024 Show
Calendar weeks 38-51
Christmas break Tuesday, 24.12.2024 - Thursday, 02.01.2025 Show
Christmas break - Buildings closed from 12 h (midday) up to and including 2 January

2025

Entrance examinations Monday, 13.01.2025 - Thursday, 23.01.2025 Show
Calendar weeks 3&4
Examination session Monday, 20.01.2025 - Friday, 14.02.2025 Show
Calendar weeks 4-7
Doctoral awards ceremony Friday, 24.01.2025
Start Spring semester Monday, 17.02.2025 Show
Calendar weeks 08-22
Doctoral awards ceremony Friday, 11.04.2025
Week after Easter: no classes Friday, 18.04.2025 - Sunday, 27.04.2025 Show
No classes up to and including Sunday, April 27, 2025 | Buildings closed over Easter from Good Friday until Easter Monday!
"Sechsel?uten" (Zurich spring festival) Monday, 28.04.2025 Show
No classes in the afternoon, buildings closed from 12:00 h!
Labour Day Thursday, 01.05.2025 Show
no classes, buildings closed
Ascension Day (classes on Friday, 30.05.2025) Thursday, 29.05.2025 Show
no classes, buildings closed
End of Spring semester Friday, 30.05.2025 Show
Calendar weeks 08-22
Whitsuntide Saturday, 07.06.2025 - Monday, 09.06.2025 Show
no classes, buildings closed
Doctoral awards ceremony Friday, 11.07.2025
Swiss National Day Friday, 01.08.2025 Show
Buildings closed
Examination session Monday, 04.08.2025 - Friday, 29.08.2025 Show
Calendar weeks 32-35
Information days for final-year secondary school students Wednesday, 03.09.2025 - Thursday, 04.09.2025 Show
Wednesday and Thursday, calendar week 36
Start Autumn semester Monday, 15.09.2025 Show
Calendar weeks 38-51
Welcome for new students Monday, 15.09.2025 Show
No classes
"Knabenschiessen" (local Zurich holiday) Monday, 15.09.2025 Show
Buildings open!
Classes begin Tuesday, 16.09.2025
Application deadline session examinations and end of semester examinations Sunday, 12.10.2025 Show
End of fourth semester week
Doctoral awards ceremony Friday, 24.10.2025
Dies Academicus ("ETH Day") Saturday, 22.11.2025 Show
Main building HG closed, Sport Center Polyterrasse MM open
Polyball (annual student prom) Saturday, 29.11.2025 Show
Buildings HG and MM closed starting Saturday, 17:00 h and Sunday
End of Autumn semester Friday, 19.12.2025 Show
Calendar weeks 38-51
Christmas break Wednesday, 24.12.2025 - Sunday, 04.01.2026 Show
Christmas break - buildings closed from 12h (midday) up to and including Sunday, 4 January

2026

Entrance examinations Monday, 12.01.2026 - Thursday, 22.01.2026 Show
Calendar weeks 3&4
Examination session Monday, 19.01.2026 - Friday, 13.02.2026 Show
Calendar weeks 4-7
Doctoral awards ceremony Friday, 23.01.2026
Start Spring semester Monday, 16.02.2026 Show
Calendar weeks 08-22
Week after Easter: no classes Friday, 03.04.2026 - Sunday, 12.04.2026 Show
No classes up to and including Sunday, April 12, 2026 | Buildings closed over Easter from Good Friday until Easter Monday!
"Sechsel?uten" (Zurich spring festival) Monday, 20.04.2026 Show
No classes in the afternoon, buildings closed from 12:00 h!
Doctoral awards ceremony Friday, 24.04.2026
Labour Day Friday, 01.05.2026 Show
no classes, buildings closed
Ascension Day (classes on Friday, 15.05.2026) Thursday, 14.05.2026 Show
no classes, buildings closed
Whitsuntide Saturday, 23.05.2026 - Monday, 25.05.2026 Show
no classes, buildings closed
End of Spring semester Friday, 29.05.2026 Show
Calendar weeks 08-22
Doctoral awards ceremony Friday, 10.07.2026
Swiss National Day Saturday, 01.08.2026 Show
Buildings closed
Examination session Monday, 03.08.2026 - Friday, 28.08.2026 Show
Calendar weeks 32-35
Information days for final-year secondary school students Wednesday, 02.09.2026 - Thursday, 03.09.2026 Show
Wednesday and Thursday, calendar week 36
Start Autumn semester Monday, 14.09.2026 Show
Calendar weeks 38-51
Welcome for new students Monday, 14.09.2026 Show
No classes
"Knabenschiessen" (local Zurich holiday) Monday, 14.09.2026 Show
Buildings open!
Classes begin Tuesday, 15.09.2026
Doctoral awards ceremony Friday, 23.10.2026
Dies Academicus ("ETH Day") Saturday, 21.11.2026 Show
Main building HG closed, Sport Center Polyterrasse MM open
Polyball (annual student prom) Saturday, 28.11.2026 Show
Buildings HG and MM closed starting Saturday, 17:00 h and Sunday
End of Autumn semester Friday, 18.12.2026 Show
Calendar weeks 38-51
Christmas break Thursday, 24.12.2026 - Sunday, 03.01.2027 Show
Christmas break - buildings closed from 12 h up to and including 3 January

Contact Academic Calendar

Andrea Heinzelmann

ETH Zurich
Information & Planning

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