Dussehra, also known as Vijayadashami, falls on the tenth day (Dashami tithi) of the bright fortnight of Ashwin month. It commemorates Lord Rama's victory over the demon king Ravana, a triumph of righteousness, courage, and dharma over arrogance and evil. The name itself tells the story: Dasha-hara means the defeat of the ten-headed Ravana, while Vijaya-dashami means "the tenth day of victory."
Beyond the Ramayana narrative, Vijayadashami also marks the day Goddess Durga completed her nine-night battle against the buffalo demon Mahishasura, making it a celebration of Shakti as much as of Rama. Across traditions, the festival carries one unified message, truth and virtue ultimately prevail, no matter how powerful the forces arrayed against them.
Historically, Dussehra was also the traditional day for kings and warriors to begin military campaigns and for people to start new journeys, businesses, or learning. That spirit of auspicious beginnings is very much alive today: the aparahna (afternoon) window called Vijaya Muhurat is considered one of the most powerful moments in the entire Hindu calendar for launching anything important in life.