Meanwhile, the ceremony of launching fire boats จัดขึ้นในตอนเย็นก่อนพระอาทิตย์ตก. Buddhist monks will be invited to chant, give precepts and deliver a sermon. However, the participants must bring joss-sticks and candles to take part in a religious rite. หลังพระอาทิตย์ตก, the boats will be lit and launched on the Mekong River to worship Lord Buddha.