Grah Shanti is done for the happiness in family. This is performed to appease deities and nine planets. It removes the ill effects of the nine planets. Benefits include: removing obstacles, health problems, negativities, graha dosha etc.
Festivals are an important part of Indian culture. Fasting and festivities go hand in hand and on that religious day or period some or the other celebrations prevail in every household. It is a time to come together, get connected to out roots, culture, values, pray and hope for prosperity in life.