I know, this has actually nothing to do with Spain, but this is THE national holiday of Switzerland, and being Swiss, this is why.....
The Swiss National Day (German: Schweizer Bundesfeier;
French: Fête nationale Suisse; Italian: Festa nazionale svizzera; Romantsch: Fiasta naziunala Svizra) is the national holiday of Switzerland, set on August 1st. It is an official national holiday since 1994,
although the day had been suggested for the celebration of the foundation of the Swiss Confederacy as early as 1889. he date is inspired by the date of the Federal Charter of 1291, placed in "early August" (primo incipiente mense Augusto). The document
is one of several dozen pacts attested for the territory of Switzerland in the period of the mid 13th to mid 14th century. The foundation of the Old Swiss Confederacy had been mostly associated with the Bund of Brunnen of 1315, or with the
Ruetlischwur - plegde - dated to 1307. 1 August is today celebrated each year with paper lantern parades, bonfires, hanging strings of Swiss flags and fireworks.
If you want to read more about this, check on
Wikipedia. The picture is from ''free pictures fireworks''