Guru (Jupiter) mahadasha for Tula (Libra) 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 Jupiter mahadasha lasts 16 years in full. Most people meet it partway through, so the part they live through can be shorter.

Jupiter stands for wisdom, teachers, children, growth and faith. Its period tends to widen life: learning, guidance, family growth and a stronger sense of meaning.

Counted from Libra as the first house, Jupiter rules Sagittarius and Pisces, your 3rd and 6th houses. During its period the matters of both come forward:

The 3rd house is effort, courage, skills, brothers and sisters and short journeys. Its lord's period tends to reward initiative, practice and your own hands-on work.

The 6th house is daily work, service, competition and debts. Its lord's period tends to bring hard work and rivals to deal with, and favours steady routines and paying down what you owe.

Jupiter counts Venus, the lord of Libra, 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 Jupiter mahadasha, where the planet sits in your own chart and the sub-periods inside it shape the years more than your Moon sign alone.