Lao Festivals are usually linked to agricultural seasons or historical Buddhist holidays. The biggest celebration, New Year, interestingly enough takes place in mid-April, and this is also true of Thailand, Burma, Cambodia, and among the Dai people of Yunnan, China. Boon Bang Fai (the rocket festival) takes place a month later in May, when more significant rain showers should materialize. This is an animist celebration with plenty of processions, music and dancing, accompanied by the firing of bamboo rockets to prompt the heavens to send rain. The week-long Tat Luang Festival in Vientiane in November has the whole repertoire of fireworks, music and parades.