Basel-Stadt Business Day Calculator
Last reviewed: May 19, 2026 · Holiday data: June 24, 2026
Calculate business days in Basel-Stadt with its own cantonal public holidays. Basel-Stadt shares the Monday to Friday working week and the Saturday and Sunday weekend with the rest of Switzerland, but its holiday calendar is different, so due dates and deadlines can land differently from the national count.
How Basel-Stadt differs from the national Swiss holidays
Basel-Stadt keeps the national Swiss public holidays and adds one statutory cantonal day: Tag der Arbeit (Labour Day) on 1 May, treated as equal to a Sunday across the canton. The Basler Fasnacht, the three days of carnival that begin with the Morgestraich, closes shops and offices but is not a legal public holiday, so it stays out of the count, the same treatment given to Zürich's Sechseläuten. No Catholic days are observed canton-wide, and Stephanstag is kept. The working week is Monday to Friday with a Saturday and Sunday weekend.
Worked example
Adding 1 business days to Thursday, April 30, 2026 using Basel-Stadt's holidays lands on Monday, May 4, 2026. With the national Swiss holidays, the same calculation lands on Friday, May 1, 2026: the gap comes from Basel-Stadt's own calendar.
Basel-Stadt public holidays in 2026
| Date | Day | Public holiday |
|---|---|---|
| January 1 | Thursday | Neujahrstag (New Year's Day) |
| April 3 | Friday | Karfreitag (Good Friday) |
| April 6 | Monday | Ostermontag (Easter Monday) |
| May 1 | Friday | Tag der Arbeit (Labour Day) |
| May 14 | Thursday | Auffahrt (Ascension Day) |
| May 25 | Monday | Pfingstmontag (Whit Monday) |
| August 1 | Saturday (weekend) | Bundesfeiertag (Swiss National Day) |
| December 25 | Friday | Weihnachten (Christmas Day) |
| December 26 | Saturday (weekend) | Stephanstag (Boxing Day) |
How to count Basel-Stadt business days
For an interactive calculation, use the Switzerland calculator and add Basel-Stadt's own dates under Advanced options. The per-year holiday pages below list every Basel-Stadt date ready to paste in.
Basel-Stadt public holiday data is verified against the Kanton Basel-Stadt portal (bs.ch) and the consolidated Art. 20a ArG holiday matrix.
Related links
For informational purposes only
This calculator provides general estimates based on business day counting rules. It does not constitute legal advice. Deadlines in legal, regulatory, or contractual matters may be subject to jurisdiction-specific rules, court orders, or statutory exceptions. Always verify critical deadlines with a qualified professional.