Shani (Saturn) mahadasha for Mesha (Aries) 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 Aries as the first house, Saturn rules Capricorn and Aquarius, your 10th and 11th houses. During its period the matters of both come forward:

The 10th house is career, standing and public life. Its lord's period tends to put work and responsibility in front, with chances to rise for those who carry them.

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.

Saturn counts Mars, the lord of Aries, as a natural enemy. Its themes may meet some friction with your temperament, so patience and a steady routine help the period give its best.

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.