Pitṛ yajña — offering to the ancestors
Pitṛ yajña honours one's ancestors, traditionally through tarpaṇa — offering water with sesame. Even without formal rites, remembering parents and grandparents with gratitude, keeping their photos with respect, and caring for elders in the family are seen as part of this duty.
Karmakāṇḍa — the ritual way · Ask a Jyotishi your own question