In Hindu astrology, Sade-Sati (IAST: sāḍhe-sātī) is the 7+1⁄2 years long period of Shani (Saturn).
In some ways of computation, Sade Sati is said to begin when the Saturn is transiting the asterism 45 degrees prior to the position of the natal moon and ends when Saturn transits the asterism 45 degrees past the position of the natal moon.
This would mean that Sade Sati ends when Saturn transits 18 degrees in Gemini / Mithuna.
Depending on one's birth chart, it can bestow benefits and achievements and take one to heights, or it can utterly destroy a person's material life but with the purpose of uplifting spiritually.
[2] Saturn, the karaka for hard work, discipline, old age and authority, will show results based on how the individual has lived his/her life up till that point.
Sade sati's heaviest challenges during this time, and how the individual deals with it, sets the tone for the next 22.5 years as Saturn starts to move around the twelve houses again.
Along the same lines, even as Saturn is considered the ruler of Kanya / Virgo or even Makara / Capricornus, in both these signs it transits through Uthram astersim and Uttarashada asterism respectively.
These are asterisms ruled by Sun and even while it is popularly believed that people born with the natal moon in these signs do not face significant challenges in SadeSati, it remains that Saturn is more uncomfortable in the signs / asterisms ruled by planets considered inimical to it, and Saturn is considered inimical to the Sun, in part due to the stark contrast between their astronomical natures themselves, but also the popular Indian mythology surrounding the origins of the enmity.
[citation needed] [3] Negative outcomes of shani dhaiya gives State of disgrace or loss of self-respect, Lack of prosperity, effort that does not accomplish its intended purpose in time, loses consistently, inability to discharge debts as they come due, loss of ability to function normally, disposed to psychological variability and having difficulty in coping with personal relationships, destroys the peace or tranquility, mental and physical health ailments.
Saturn transit being a predominantly mental / emotional transit, as stated above, it follows that worship of Lord Shiva, the prognosticator of emotional / mental health, is strongly recommended with the preferred prayer being the Mahamrityunjaya Mantra Japa.
On Savitri, knowing about this, she returned, took her place back, and sired Yama (Lord of Death) and Yamuna with Sun.
Yama, is said to have hit Saturn in the leg leading to a limp, apart from a life of deliberate isolation, insult and humiliation.
Remedies include offering milk to Lord Shiva and helping underprivileged persons, especially on Saturdays.