Saturn is believed to be one of the most strong and powerful players in the world of astrology. It is the farthest planet from the sun among the nine planets in Indian Astrology and also is said to be cold and dark. ‘Karmfal Data’ is what the astrology calls the planet of Saturn. This is because Saturn is the planet that is believed to be the one who gives fruits or results according to your karmas. This planet is said to be the judge among the nine planets. Saturn has there capability to see the individual’s past, present and also determine an individual’s future based on his / her actions in the past. 

In order to please the planet Saturn, one should be hardworking, responsible and should only indulge in good Karmas. This planet is like a guide that teaches you to do good in harsh ways. Hence, Saturn is the planet that gives very harsh punishment to people who get involved in unlawful, illicit and illegitimate activities. This planet is completely intolerable of any injustice that doesn’t matter whether it's big or small.

‘Dasha' means time period or span of time. VimshottariDasha is considered to be the most important Dasha in Hindu astrology and in this Dasha, there are 120 years. This span of 120 years is divided into mine parts belonging to each planet and these nine parts are called Mahadasha – the Main time period.

The duration of Saturn Mahadasha is that of 19 years. The results brought upon the life of a person by the planet Saturn depend on the individual’s birth chart. The effects of Saturn VishmottariMahadasha could be really harmful when is deliberated and afflicted by the malefic planets. But this doesn’t necessarily mean that the Saturn only brings problems in one’s life. There is also the possibility that the impact of Saturn can do wonders in one’s life when it seems to be beneficial and whether the impact will be negative or positive completely depends upon its position.

Saturn can prove to be the most destructive planet with its harmful impact on one’s horoscope if it is ill-placed. The significant bad houses of Saturn in a horoscope are 6th house, 8th house, and 12th house. They can bring to one’s life the feelings of being depressed and sad and the person might feel suppressed and will also have to face a lot of troubles. Also, ill-placed Saturn along with the aspect of Mars can make the situations even worse. This could lead to the person to get highly aggressive and in depression.

Saturn Mahadasha is the time span of 19 years of failures, pain, agony, sorrows, and litigation. People who are going through the bad impact of Mahadasha because of the ill-placed Saturn will face different kinds of problems and obstacles in their lives. The Shani Mahadasha is also strong enough to ruin the native if it is ill-disposed. It can bring along a lot of health issues, loss of both immovable and movable properties, deceits, lack of presence of reliable friends in life, robbery, enmity, lack o the loss of the sources of income and many more troubles. 

Saturn is also believed to be the natural significant factor of ill health of a person and can also lead to a person being hospitalized during the time period of Saturn. It also signifies enormous struggles which one needs to face during the period of Mahadasha and this also has the ability to separate us from our loved ones which would ultimately lead to loneliness in life. 

However, if we look at the other side of the facet of the impact of Saturn in one’s life, it could bring 19 years of wealth, money, power, Good social status and bestow an individual with enormous successes in his / her life. The planet then could prove to be extremely benevolent and enlighten one's life with enormous achievements, if Saturn is strong and positive in an individual’s horoscope. Saturn is such a powerful planet that it can give you a king-size life if placed positively.  

Some of the positive impacts that can happen in one’s life because of the Saturn Mahadasha are
Good and robust health, Good family life, Congenial relationship with siblings, Influential and rich friends, Winning over enemies, Long life span, Success in business, career, and profession, Spiritual development, Beautiful life partner and happy married life, Knowledge, intelligence, Palatial building , Money and wealth and Social status
Now let’s analyze the impact of the planet Saturn Mahadasha on the life of people who are the ascendants of different zodiac signs:
The result of Saturn Mahadasha for:
ARIES ASCENDANT:
The planet Saturn is believed to be in the lord of the 10th house of Aries ascendants which rules their profession, career, and job. The opinion of Ancient Classics is that the impact of it malefic for ascendants of Aries. 
TAURUS ASCENDANT:
The planet is the lord of both the 9th and 10th houses and is believed the most beneficial planet for those who are the ascendants of Taurus. 
GEMINI ASCENDANT:
The planet Saturn is the lord of the 8th and 9th house and is believed to be the beneficial planet for those who are the ascendants of Gemini. 
CANCER ASCENDANT:
The planet is believed to be beneficial when it is present in the 7th and 8th house but it could prove to be dangerous in 2nd, 9th, and 11th house. Thus, this planet if malefic for those who are the ascendants of Cancer. 
LEO ASCENDANT:
The planet is the lord of the 6th and the 7th house and according to the ancient classics, Saturn is not considered to be the beneficial planet for those who are the ascendants of Leo. Thus, it is malefic for them. 
VIRGO ASCENDANT:
It is the lord of the 5th house and thus is considered to be the beneficial planet for those who are the ascendants of Virgo. 
LIBRA ASCENDANT:
It is the lord of the 4th and 5th house and thus is considered to be the most beneficial planet for those who are the ascendants of Libra. 
SCORPIO ASCENDANT:
I am the lord of 3rd and 4th house and as per the ancient classics, the planet Saturn is considered to be malefic for those who are the ascendants of Scorpio. 
SAGITTARIUS ASCENDANT:
As per the ancient classics, the planet Saturn is believed to be dangerous for those who are the ascendants of Sagittarius. Thus, it is malefic for them.
CAPRICORN ASCENDANT:
The planet Saturn is the lord of the 1st and the 2nd house and is considered to be beneficial for those who are the ascendants of Capricorn.
AQUARIUS ASCENDANT:
The planet Saturn is the lord of Lagna and the 12th house and as per the ancient classics, it is considered beneficial for those who are the ascendants of Aquarius.
PISCES ASCENDANT:
The planet Saturn is the lord of the 11th and the 12th house and is considered to be malefic for those who are the ascendants of Pisces. 
Thus, we conclude with the fact that the impact of Saturn Mahadasha can either be negative or positive and it completely depends on the individual’s birth chart who is going the this Mahadasha which lasts for the span of 19 years in one’s life.