After the cortège, a 21-gun salute will be fired at five second intervals from Skeppsholmen.
The custom of firing a salute on certain days, at certain state ceremonies and in international relations began in the 17th century, when ships fired their cannons to show their peaceful intentions when approaching a harbour. This later became a mark of honour, or a salute. Over time, the arrangements came to be strictly governed according to rank. Salutes were also fired as a password, to identify oneself.
According to international practice, a national 21-gun salute is an official mark of honour given for the nation on occasions such as Sweden's National Day and royal occasions, and in state ceremonial contexts. In Stockholm, salutes are fired from Skeppsholmen.