The resignation of Slobodan Milošević (then President of Serbia) on October 5, 2000, marked a turning point in the modern history of Serbia and the Balkans. Following a disputed presidential election in September of that year, widespread protests erupted across Serbia, culminating in what became known as the October 5th Revolution. Hundreds of thousands of citizens gathered in Belgrade and other cities, demanding Milošević’s resignation. During the protests, demonstrators stormed the parliament building and the national television station. Security forces initially attempted to resist but eventually withdrew, leading Milošević to concede defeat. Estimates suggest that more than half a million people participated in the Belgrade demonstrations. This resignation ended over a decade of Milošević’s rule, which had been marked by the Yugoslav wars and ongoing political and economic crises. After the resignation, Vojislav Koštunica was introduced as the new president, and the transfer of power proceeded peacefully. The event had a significant impact on political developments in the region and paved the way for major changes in Serbia’s governmental structure. In the 2000 Gregorian calendar, this event is recognized as one of the most important political shifts in Europe. Its inclusion in the Gregorian calendar was due to its historical importance and the wide-ranging effects it had on Serbian society and the region in that year.