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 | Showadd |
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Calendar weeks 38 - 51 | ||
Spring Semester 2025 | Monday, 17.02.2025 - Friday, 30.05.2025 | Showadd |
Calendar weeks 8 - 22 | ||
Autumn Semester 2025 | Monday, 15.09.2025 - Friday, 19.12.2025 | Showadd |
Calendar weeks 38 – 51 | ||
Spring Semester 2026 | Monday, 16.02.2026 - Friday, 29.05.2026 | Showadd |
Calendar weeks 8 - 22 | ||
Autumn Semester 2026 | Monday, 14.09.2026 - Friday, 18.12.2026 | Showadd |
Calendar weeks 38 - 51 | ||
Spring Semester 2027 | Monday, 22.02.2027 - Friday, 04.06.2027 | Showadd |
Calendar weeks 8 - 22 | ||
Autumn Semester 2027 | Monday, 20.09.2027 - Friday, 24.12.2027 | Showadd |
Calendar weeks 38 – 51 Kein Unterricht ab 12 Uhr, Gebäude geschlossen |
Overview semester dates
Without additional information the individual opening and and closing times of the ETH buildings apply.
2024
2025
Entrance examinations | Monday, 13.01.2025 - Thursday, 23.01.2025 | Showadd |
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Calendar weeks 3&4 | ||
Examination session | Monday, 20.01.2025 - Friday, 14.02.2025 | Showadd |
Calendar weeks 4-7 | ||
Doctoral awards ceremony | Friday, 24.01.2025 | |
Start Spring semester | Monday, 17.02.2025 | Showadd |
Calendar weeks 08-22 | ||
Doctoral awards ceremony | Friday, 11.04.2025 | |
Week after Easter: no classes | Friday, 18.04.2025 - Sunday, 27.04.2025 | Showadd |
No classes up to and including Sunday, April 27, 2025 | Buildings closed over Easter from Good Friday until Easter Monday! | ||
"Sechseläuten" (Zurich spring festival) | Monday, 28.04.2025 | Showadd |
No classes in the afternoon, buildings closed from 12:00 h! | ||
Labour Day | Thursday, 01.05.2025 | Showadd |
no classes, buildings closed | ||
Ascension Day (classes on Friday, 30.05.2025) | Thursday, 29.05.2025 | Showadd |
no classes, buildings closed | ||
End of Spring semester | Friday, 30.05.2025 | Showadd |
Calendar weeks 08-22 | ||
Whitsuntide | Saturday, 07.06.2025 - Monday, 09.06.2025 | Showadd |
no classes, buildings closed | ||
Doctoral awards ceremony | Friday, 11.07.2025 | |
Swiss National Day | Friday, 01.08.2025 | Showadd |
Buildings closed | ||
Examination session | Monday, 04.08.2025 - Friday, 29.08.2025 | Showadd |
Calendar weeks 32-35 | ||
Information days for final-year secondary school students | Wednesday, 03.09.2025 - Thursday, 04.09.2025 | Showadd |
Wednesday and Thursday, calendar week 36 | ||
Start Autumn semester | Monday, 15.09.2025 | Showadd |
Calendar weeks 38-51 | ||
Welcome for new students | Monday, 15.09.2025 | Showadd |
No classes | ||
"Knabenschiessen" (local Zurich holiday) | Monday, 15.09.2025 | Showadd |
Buildings open! | ||
Classes begin | Tuesday, 16.09.2025 | |
Application deadline session examinations and end of semester examinations | Sunday, 12.10.2025 | Showadd |
End of fourth semester week | ||
Doctoral awards ceremony | Friday, 24.10.2025 | |
Dies Academicus ("ETH Day") | Saturday, 22.11.2025 | Showadd |
Main building HG closed, Sport Center Polyterrasse MM open | ||
Polyball (annual student prom) | Saturday, 29.11.2025 | Showadd |
Buildings HG and MM closed starting Saturday, 17:00 h and Sunday | ||
End of Autumn semester | Friday, 19.12.2025 | Showadd |
Calendar weeks 38-51 | ||
Christmas break | Wednesday, 24.12.2025 - Sunday, 04.01.2026 | Showadd |
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 | Showadd |
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Calendar weeks 3&4 | ||
Examination session | Monday, 19.01.2026 - Friday, 13.02.2026 | Showadd |
Calendar weeks 4-7 | ||
Doctoral awards ceremony | Friday, 23.01.2026 | |
Start Spring semester | Monday, 16.02.2026 | Showadd |
Calendar weeks 08-22 | ||
Week after Easter: no classes | Friday, 03.04.2026 - Sunday, 12.04.2026 | Showadd |
No classes up to and including Sunday, April 12, 2026 | Buildings closed over Easter from Good Friday until Easter Monday! | ||
"Sechseläuten" (Zurich spring festival) | Monday, 20.04.2026 | Showadd |
No classes in the afternoon, buildings closed from 12:00 h! | ||
Doctoral awards ceremony | Friday, 24.04.2026 | |
Labour Day | Friday, 01.05.2026 | Showadd |
no classes, buildings closed | ||
Ascension Day (classes on Friday, 15.05.2026) | Thursday, 14.05.2026 | Showadd |
no classes, buildings closed | ||
Whitsuntide | Saturday, 23.05.2026 - Monday, 25.05.2026 | Showadd |
no classes, buildings closed | ||
End of Spring semester | Friday, 29.05.2026 | Showadd |
Calendar weeks 08-22 | ||
Doctoral awards ceremony | Friday, 10.07.2026 | |
Swiss National Day | Saturday, 01.08.2026 | Showadd |
Buildings closed | ||
Examination session | Monday, 03.08.2026 - Friday, 28.08.2026 | Showadd |
Calendar weeks 32-35 | ||
Information days for final-year secondary school students | Wednesday, 02.09.2026 - Thursday, 03.09.2026 | Showadd |
Wednesday and Thursday, calendar week 36 | ||
Start Autumn semester | Monday, 14.09.2026 | Showadd |
Calendar weeks 38-51 | ||
Welcome for new students | Monday, 14.09.2026 | Showadd |
No classes | ||
"Knabenschiessen" (local Zurich holiday) | Monday, 14.09.2026 | Showadd |
Buildings open! | ||
Classes begin | Tuesday, 15.09.2026 | |
Doctoral awards ceremony | Friday, 23.10.2026 | |
Dies Academicus ("ETH Day") | Saturday, 21.11.2026 | Showadd |
Main building HG closed, Sport Center Polyterrasse MM open | ||
Polyball (annual student prom) | Saturday, 28.11.2026 | Showadd |
Buildings HG and MM closed starting Saturday, 17:00 h and Sunday | ||
End of Autumn semester | Friday, 18.12.2026 | Showadd |
Calendar weeks 38-51 | ||
Christmas break | Thursday, 24.12.2026 - Sunday, 03.01.2027 | Showadd |
Christmas break - buildings closed from 12 h up to and including 3 January |