Balinese calendars, with illustrations for each day indicating what activities that day is auspicious for, are popular souvenirs. Apart from the everyday Western calendar, the Balinese also use two local calendars, the saka and the wuku calendar. The wuku calendar is used to determine festival dates. The calendar uses 10 different weeks, each from one to 10 days and all running simultaneously. The Galungan festival, Bali's major feast, is held throughout the island and is an annual event in the wuku year. During this ten day period all the gods, including the supreme deity Sanghyang Widi, come down to earth for the festivities. Barongs prance from temple to temple and village to village. The last and most important day of the ten day festival is called Kuningan.