Shani Dev is the son of Sun God and Goddess Chhaya, hence he is also known as Surya-Putra, and Chhayaputra. According to Hinduism, he is the elder brother of Yama, the Hindu god of death, who in some scriptures corresponds to the god of justice and death. The son of Sun, Shani, judges every living being and while living gives the fruits of actions in this life, Yama gives the results of actions after death.
It is said that when Shani Dev opened his eyes for the first time, there was a solar eclipse. It shows their influence on the astrological chart. It is believed that Shani Dev, like a magistrate (judge), is a teacher and well-wisher for the righteous or those who do good deeds, but also a punisher for those who stray from the path or do bad deeds. Shanidev is depicted as a dark complexion, dressed in black; He has a trident, bow, arrows in one hand and vermillion in one hand. The vehicle of Shani Dev is a crow.
The Shani Shingnapur temple has no roof, doors, or walls around it, the deity Shani resides in the form of a self-styled black stone idol and is seated on a marble platform. His trident is placed on the side of the idol and Nandi's idol is facing south. There are small images of Shiva and Hanuman in front of the stage.
Male visitors are allowed to climb the platform on which the idol is. Women can enter the temple premises but cannot climb on the platform. The planet Shani is worshiped here.

Seva and worship
 
To perform the Abhishek, the devotee also uses sesame oil, coconut, dried dates, dry fruits, dates, betel nut, rice, turmeric-kumkum, guggul, sugar, Madar flower (blue), black cloth, and milk.

To worship Lord Shaneshwar at Shani Shingnapur, devotees have to take a head bath and go to the platform in wet clothes where Shani Maharaj sits. The devotee circumambulates after the puja and offers prayers from the surrounding holy well with water and sesame oil.

Utsav
Shani Amavasya is considered the most auspicious day to please Lord Shani. A festival is held on the new moon day which falls on a Saturday. Devotees bathe the image of Lord Shani with water and oil, offer flowers. On this day a procession of Shani's palanquin is taken out. Other festivals include Shanaishchar Jayanti - the birthday of Lord Shani.

Interesting fact

A unique aspect of Shingnapur is that the doors and locks are not installed in the houses for the security of the houses here. The people here believe that it is the grace of justice of Shani Dev that no one has ever stolen in this village.
Nearby Places:
Shri Dattatreya Temple, Tomb of Sant Udasi Baba