National Independence Day, known as Fiestas Patrias, is the most significant national holiday in Chile. Celebrated annually on September 18, it marks the formal proclamation of the First Government Junta back in 1810, establishing independent rule from Spain. The holiday officially commemorates the country's sovereignty, national identity, and pays homage to its rich cultural heritage.

The festivities embody the vibrant Chilean culture filled with traditional music, dance, food, and parades. It is customary for Chileans to attend 'Fondas', traditional food and drink tents organized in parks across the nation. Many participate in the national dance called 'Cueca' and enjoy traditional foods such as empanadas and barbecued meats. Moreover, rodeos featuring skilled Huasos (Chilean cowboys) are very popular attractions during this time.

Despite being officially a single-day holiday, in practice, celebrations often extend to an entire week, with government-declared 'bridge holidays', making it a chance for a prolonged national break. The spirit of unity, joy, and pride is omnipresent in the country during this time. The Chileans also celebrate Armed Forces Day on the 19th September as part of the extended celebrations, where military parades take place to honor the contribution of the military in the preservation of their country.