In Switzerland, August 1st is Swiss National Day, commemorating the founding of the Swiss Confederation in 1291. This day celebrates the alliance of the cantons of Uri, Schwyz, and Unterwalden, who united to form a defense against the Habsburg dynasty. It's a public holiday, marked by celebrations like bonfires, fireworks, and speeches across the country. 

The date is based on the Federal Charter of 1291, also known as the Pact of Brunnen, which formalized the alliance between the three cantons.

August 1st became an official public holiday in Switzerland in 1994.

Swiss National Day is a day of festivities, including:

Bonfires, often lit on hillsides. 

Fireworks displays. 

Speeches by political figures. 

Traditional music and yodeling. 

Parades with people in traditional costumes. 

Lantern processions with Swiss flags.

While official events take place, many Swiss celebrate with private gatherings, often featuring barbecues and enjoying the fireworks.