Shani Trayodasi is the auspicious day to worship Lord Shani. In January 2012, the dates of Shani Trayodasi is January 7 & 21. It is observed on Shanivar or Saturday which falls on Trayodasi day (thirteenth day) in lunar fortnight.
- January 7, 2012 – It falls on Shukla paksha in Poush maas in Marathi, Gujarati, Telugu, and Kannada calendars and all other calendars of North India.
- January 21, 2012 – It falls on Krishna Paksha in Poush month in Amavasyant Panchangams & Krishna Paksha in Magh Month.
The main rituals of Shani Trayodasi vrat are – Shani Til Tailabhishek, Shani Shanti Puja, Shani dosha parihar puja, etc. Lord Shani is offered black Til (Sesame seeds), Til oil (Gingelly oil), black cloth, fruits, betel leaves, coconut, black or dark blue colored flowers.