Festivals of many types, serve to meet specific social needs and duties, as well as to provide entertainment. These times of celebration offer a sense of belonging for religious, social, or geographical groups. Modern festivals that focus on cultural or ethnic topics seek to inform members of their traditions. In past times, festivals were times when the elderly shared stories and transferred certain knowledge to the next generation. Historic feasts often provided a means for unity among families and for people to find mates. Select anniversaries have annual festivals to remember previous important occurrences.


Seasonal festivals are determined by the solar and the lunar calendars and by the cycle of the seasons. The changing of the season was celebrated because of its effect on food supply. Ancient Egyptians would celebrate the seasonal inundation caused by the Nile River, a form of irrigation, which provided fertile land for crops. In the Alps, in autumn the return of the cattle from the mountain pastures to the stables in the valley is celebrated as Almabtrieb. A recognized winter festival, the Chinese New Year, is set by the lunar calendar, and celebrated from the day of the second new moon after the winter solstice.