The months of July and August are especially important in Japan as the time of year when the spirits of the ancestors are thought to return to their earthly homes for a few days visit. This tradition is called Obon and is observed at different periods of mid-summer (mostly August) throughout the country. During Obon families will typically decorate their butsudan Buddhist home altar in preparation for the arrival of their spiritual guests. Many families may also light small fires of pine wood at the front of the home in order to guide the returning spirits and welcome them home.
