Shani (Saturn) mahadasha for Meena (Pisces) Moon sign

In the Vimshottari system a life moves through nine long periods, each ruled by one planet. The planet that rules the period sets the tone of those years: the areas of life that come forward, and the kind of effort that pays.

The Saturn mahadasha lasts 19 years in full. Most people meet it partway through, so the part they live through can be shorter.

Saturn stands for time, duty, patience, hard work and structure. Its period tends to ask for steady effort and responsibility and repays it slowly but lastingly; shortcuts tend not to hold.

Counted from Pisces as the first house, Saturn rules Capricorn and Aquarius, your 11th and 12th houses. During its period the matters of both come forward:

The 11th house is income, gains, friends and hopes. Its lord's period tends to bring returns on earlier effort, helpful networks and wishes moving closer.

The 12th house is spending, rest, time abroad and letting go. Its lord's period tends to bring expenses, travel or a stay away from home, and a pull towards quiet and spiritual practice.

Saturn is neither friend nor enemy to Jupiter, the lord of Pisces. Its period tends to give what you put into it; the planets' places in your own chart decide more than this relationship does.

Which mahadasha you are in, and when it began, depends on the Moon's nakshatra at the moment you were born, so it is personal to you. Even within the Saturn mahadasha, where the planet sits in your own chart and the sub-periods inside it shape the years more than your Moon sign alone.