Academic Calendar
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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 |
|---|---|---|
| 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.
2025
| 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 |
|---|---|---|
| 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 | ||
Contact Academic Calendar
Andrea Heinzelmann
ETH Zurich
Information & Planning