Numerous divine legends are associated with the observance of Pradosh Vrat, but the most widely told story revolves around Lord Shiva’s act of supreme sacrifice and compassion. In ancient times, a fierce battle was ongoing between the Devtas (Gods) and Asuras (Demons). The Devtas were on the verge of defeat and had already lost many warriors.

Seeking a solution, they turned to the divine trinity — Lord Brahma, Lord Vishnu, and Lord Shiva — for help. The deities advised the Devtas to churn the ocean (Samudra Manthan) to obtain Amrut (nectar of immortality). However, the Devtas lacked the strength to perform this colossal task alone, so they approached the Asuras and promised them a share of the nectar in exchange for their assistance. As the churning began, the first substance to emerge was Halahala — a lethal poison capable of destroying all life in the universe.

Terrified and helpless, the Devtas and Asuras once again turned to Lord Shiva, the protector of all. Without hesitation, Lord Shiva drank the poison to protect the universe. Fearing the poison would harm him, Goddess Parvati quickly held his throat to stop it from entering his body, trapping it in his neck — turning it blue and giving him the name Neelkanth. Deeply moved by this sacrifice, the Devtas and Asuras praised Lord Shiva during the twilight period (Pradosh Kaal).

Pleased with their devotion, Lord Shiva performed the cosmic dance on his bull Nandi, dancing between its horns. Since then, devotees observe Pradosh Vrat during this sacred twilight time to worship Lord Shiva and Goddess Parvati, expressing gratitude and seeking blessings for peace, prosperity, and liberation.