Jai Sri Ganesha,
Pitar Paksha is a span that is designated for souls in varying forms,
Souls departed from here but in the quest to regain the embodiment visit the planet to bless the immediate last in lineage,
Mostly souls visit the planet for manifest and hidden causes,
On Sri Amavasya are bound to depart back to their designated regions in that world,
May Lord Bless all,
Thanks, please