روز جمهوری, or Republic Day, is celebrated in various countries to commemorate the establishment of a republic. In ایران, this day marks the anniversary of the declaration of the Islamic Republic in 1979, following the انقلاب اسلامی. It is observed on April 1st each year. On this day, various events and ceremonies take place, including parades, speeches, and cultural activities. The celebration emphasizes the values of democracy and the importance of the republic in the nation's history. It serves as a reminder of the transition from monarchy to a republic and the significance of the people's voice in governance.