Republic Day, also referred to as National Salvation Day, is a major public holiday in Azerbaijan celebrated annually on June 15. This significant day in Azerbaijani history marks the formation of the Azerbaijan Democratic Republic in 1918, which is known to be the first democratic and secular republic in the Muslim world. The Republic of Azerbaijan was also known for being one of the first nations to empower women with voting rights before many developed countries around the globe.

The holiday has great national significance and is observed with various public and private events across the country. Festivities include grand military parades, music and dance performances, and firework displays. Schools, businesses, and government offices are closed on this day, and the president and other high-ranking officials participate in the celebrations, delivering speeches and laying flowers at the monuments dedicated to national heroes.

In addition to its historical connotation, Republic Day also represents a turning point in the country's ongoing path to political and socioeconomic development. Traditionally, the holiday has been seen as an occasion to strengthen national unity and patriotism among Azerbaijanis, and to commemorate those who fought for the country's freedom and independence. It is a day of national recognition and honor, and a manifestation of the Azerbaijani people's dedication to maintaining their sovereignty.