Martyrs and Ahmad Shah Massoud Day is an Afghan public holiday observed on the 9th of September each year. This day pays homage to Ahmad Shah Massoud, an Afghan resistance fighter who was assassinated on September 9, 2001. Massoud, often referred to as the 'Lion of Panjshir,' was a key figure in the fight against the Soviet occupation in the 1980s and later against the Taliban.

The day also serves as a memorial for all the 'martyrs' who have died fighting for Afghanistan throughout its turbulent history. It is a time for the people of Afghanistan to remember and honor the efforts and sacrifices of these individuals. Festivities during this day include speeches, parades, and other commemorative events that remember the contribution of national heroes. People also visit the graves of the fallen heroes and pray for their eternal peace.

While the observance of this holiday is mainly focused on paying respect to Ahmad Shah Massoud and other martyrs, it's also seen as a day to promote a unified national identity and a sense of pride among Afghans. Families and communities come together to celebrate the spirit of resilience and patriotism embodied by Massoud and other martyrs. Despite the challenges and conflict the country has faced over the years, this holiday serves as a symbol of strength and perseverance for the Afghan people.