On the full moon night of the twelfth lunar month, the tide in the rivers is highest and the moon at its brightest, creating an ideal setting. The Thai people choose this day to hold the 'Loy Kratong' (Loi Krathong) festival, or the 'festival of light.' Loy Kratong is one of the two most recognized festivals in the country. Chiang Mai is another prime site to celebrate Loy Kratong. The festival is known in northern dialect as 'Yi Peng.'