Sovereignty Day of Serbia, also known as Statehood Day, is observed annually on February 15. It is a two-day celebration considered a National Day in Serbia, marking significant historical events such as the first Serbian Uprising in 1804 and the adoption of the first Serbian Constitution in 1835. The holiday was first celebrated in 2001, and if it falls on a weekend, a weekday is typically designated for observance. On this day, citizens often reflect on the weather, believing it may indicate the severity of the final days of winter. The Republic of Serbia is located in Southeast Europe and shares borders with several countries, including Hungary and Romania.