Circles of big stones like Stonehenge were rebuilt so that the sun’s position with respect to the stones would indicate the day of longest sunlight and the day of shortest sunlight. Between these days there was an optimum time to harvest the crops before fall, when plants dried up and leaves fell from the trees. The winter solstice, when the days began to get longer was cause for celebration. In the next season, there was an optimum time to plant seeds so they could spring up from the ground as new growth. So farming gave rise to the concept of a year.According to the passage,