Switzerland Feiertage im September 2027

September 2027 in Switzerland runs 30 calendar days, Northern-hemisphere autumn and Southern-hemisphere spring. Switzerland observes 6 public holidays in September 2027: Geneva Prayday, Genevese Fast, Federal Day of Thanksgiving, Federal Fast Monday, Mauritius Day, St. Nicholas of Flüe. 4 of those fall on weekdays and reduce the working-day count accordingly. That leaves 18 working days for Switzerland businesses, payroll cycles, and project schedules in September 2027. September brings Labor Day in the US and Canada (first Monday) and the start of the Jewish High Holy Days in many years. For broader context, see the full 2027 calendar for Switzerland or the global view of holidays observed in September 2027 across all 190 countries we cover.