According to the search results, the last day of Pitru Paksha is known as Sarvapitri Amavasya or Shanishchari Amavasya, and it falls on October 14, 2023. On this day, people offer incense and practice meditation for their ancestors to bring them peace and satisfaction. It is also believed that on this day, the ancestors drink nectar and remain satisfied for a month, and they stay at the door of the house till sunset in the form of Vayu and wish for Shraddha from the people of their clan or family. Some auspicious works that can be done on this day include burning pots made of cow dung and offering jaggery and ghee. Additionally, performing Pitru Puja on this day is said to increase ones lifespan.