Federal Day of Thanksgiving, Repentance and Prayer in Switzerland

A shared date, with a cantonal legal status

The Swiss Federal Diet fixed the third Sunday of September as a common day of prayer in 1832. The date was accepted by the cantons with historical exceptions: Vaud’s heritage account says Graubünden followed until 1848, while Geneva continues to observe its own Jeûne genevois on a Thursday in September.[1]

The name refers to a day of thanksgiving, repentance and prayer. In Switzerland, earlier days of prayer and fasting were ordered by Catholic and Protestant authorities in response to war, epidemics and food shortages, as well as to give thanks. The shared observance also helped consolidate the Swiss Confederation formed in 1848.[1]

Despite its name, the observance is not a nationwide statutory day off. SECO identifies 1 August as Switzerland’s only federal public holiday; cantons decide which other holidays are treated like Sundays under employment law. When a recognized holiday falls on a day an employee does not work, SECO says there is no general right to take it later.[2]

Prayer, reflection and a prune tart

The day is for thanksgiving, repentance and prayer, though local religious observances may differ.[1]

A well-documented regional custom is eating prune tart, called tarte aux pruneaux. Vaud’s heritage inventory says the tradition is found in the French-speaking Protestant cantons of Vaud, Neuchâtel and Geneva, as well as the Lake District of Fribourg. The tart was once the whole midday meal and is more often dessert today; the inventory places its association with the fast around the beginning of the twentieth century, while noting that the exact date is unknown.[1]

What to expect on Sunday and Monday

On Sunday, shop opening depends on cantonal rules. SECO says Sunday opening is governed by cantonal shop-opening laws, while employment of shop staff is generally prohibited under federal law, subject to exceptions such as certain shops serving travelers at transport hubs.[3]

The Monday after the observance has particular significance in Vaud and Neuchâtel. Vaud lists the Monday of the Fast among its public holidays. In Neuchâtel, the cantonal administration observes the Monday as a day of rest, and shops are generally closed on that Monday, with exceptions. These regional rules do not make the Monday a nationwide holiday.[4][5]

The main observance is on the third Sunday of September, and there is no general right to a substitute day off when a holiday falls on a day an employee does not work. Check local rules and opening hours, especially in Vaud and Neuchâtel.[1][2][4][5]