Obon is a Buddhist memorial service for the ancestors and the deceased of the family. It takes place from the 13th through to the 15th of July or August. During the period, spirits of the dead are believed to return to their families. Japanese people visit the family grave, offer flowers, burn incense sticks and pray for their souls to rest in peace.
In time of Obon, companies and schools become a rest. So recently, many people enjoy the overseas and domestic travel.
*List of Japanese culture