5. Sani Pradosham - If it falls on Saturday.
6. Sani Mahapradosham - If it falls on Saturday and earlier day of Mahasivarathri
SPECIAL
1. Prayers in Soma Pradosham is the best of all Prayers.
2. Prayers in Sani Maha Pradosham gives 1000 times more effects.
THE ORIGIN OF PRADOSHAM
Lord Siva Swallowed the venom that arose from Parkadal (Milk Sea) when it was derived by Devas and Asuvas. He took the venom on the day of yegadhasi. He was unconcious on Dhuvadhasi. He work up on Thriyothasi at the time of meeting day and night.
Devas were perplexed. On his waking up Lord Siva did Sandhiya Narthanam (Evening Dance) with Goddess Uma, Devas, Rishis, Siva Ganas.prayed lord siva.That prayar is called PRADOSHA POOJA.
If any body does Sivalinga Dharshan during Pradosha day continiously and proceedurily for 14 years, he gets SAROOPA SWARGA (The third Swarga) according to Hindu Mythology. Those who start Pradosha Viradham, they should start on the pradosha day either in Avani or Karthigai month.