Shani Pradosham - A Day to Absolve Karmic Effects, Sins
Pradosham is that period of time that is observed on both trayodishi tithis, Shukla paksha and Krishna paksha in lunar month. It is an auspicious time when heavenly beings come down to earth and take part in their subtle forms and lord siva is most ecstatic of moods on the day.
Atha Pradoshe Shiva Eka Eva, Poojyodhananye Hari Padmajadhya,
Thasmin Mahese Vidhinejyamane, Sarve Praseedanthi Suradhi Natha
The above lines from Shiva Purana translates that at the time of Pradosha, one needs to worship only Shiva, instead of Vishnu, Brahma and others for the proper worship of Lord Shiva then, would give the effect of worshipping all gods.
When a Pradosha falls on a Saturday it is called the Shani Pradosham. Shani Pradosha puja on May 8, 2021 is propitious for the worship of Lord Shiva on a Saturday that is ruled by planet Saturn. It absolves karma and sins. Observing fast on this day could fetch plenty of boons like good fortune, long life, and fulfill wishes. It removes all negative vibrations and evil and ensures success and happiness.