A thing to remember here is that these posts are strictly meant for the particular planet position. Like, today we are looking at Saturn in Virgo, so the description given here may change for you if your Saturn is although in the sign of Virgo but in conjunction with or aspected by other planets. --

Saturn is all that which we don't like in our life. Saturn is delay, frustration, restriction, limitation and anxiety. It is hard-work and labor. It is people of authority, like boss at your work place or father-figure at home. Saturn is Master and Servant both (depends on who uses Saturn in what way). Saturn is our Karmic debt from life. Saturn is the things we didn't treat too well in our past life. Saturn is our challenges and lessons of life. Saturn is old-age, teeth in human body, diseases, transformation etc. Saturn is discipline, organisation, structure, government, law & order etc.

Virgo is the 6th sign of zodiac belt, hence it represents almost all the things which are represented by the 6th house of horoscope like Debts, Diseases, Obstacles, Serving the under-privileged, Service Life, etc. Besides this, Virgo represents analytical or critical skills of people, being perfectionist and healing abilities. Virgo's basic representation is the lady coming in boat with wheat and herbs in her hands. So, Virgo is basically a sign of healing. Virgo consists of next set of 2 and half nakshatra. i.e. Uttara-Phalguni, Hasta and Chitra. Virgo's lord is Mercury.

So, again the trend with Saturn will remain the same in Virgo. It will improve its position and person after mid 30s, As Virgo is sign of criticism, perfection and details, these people earlier in life will be criticised a lot for not being perfect or tidy. So, Saturn makes them work really hard on perfection from early life. With life, they improve on many things in life. They become more detailed oriented, more critical, analytical and perfectionist. Now, this is kind of their conditioning. So, now in later age, when these people approach others, they seek same perfection which was expected from them in childhood. So, they may not be very much liked by others but somehow it has become part of their nature. They are supposed to follow the same now. So, Saturn in Virgo creates a person who demands perfection from others. It can also create a healer or medicine person. Another profession is lawyer. But all that is possible in 30s. 

Now, the impact of these traits will be different for different people based upon the Nakshatra Saturn is in. If Saturn is in Uttara-Phalguni Nakshatra, then Saturn will be impacted by Sun's position as Sun is lord of Uttara-Phalguni Nakshatra. When Saturn is in Hasta Nakshatra, then Saturn will be impacted by Moon's position as Moon is lord of Hasta Nakshatran. If Saturn is in Chitra Nakshatra, then Mars will be impacting as Chitra is Mars' Nakshatra.

Sign lord wise, Mercury is ruler of Virgo, so Saturn's functioning is very much dependent on the condition of Mercury.