shani dev pooja vidhi-शनिवार को शनि देव की उपासना क्यों की जाती है । शनि देव । अर्था

Shani refers to the planet Saturn, and is one of the nine heavenly objects known as Navagraha in Hindu astrology.
Shani is also a male deity in the Puranas, whose iconography consists of a handsome figure carrying a sword or danda (sceptre), and sitting on a crow.
He is a god of Justice in Hindu mythology and he gives benefits to all, depending upon their deeds.
His consort is goddess Manda.