Loy Krathong Day is one of the most popular festivals of Thailand A krathong usually contains a candle, three joss sticks, some flowers and coins. The festival starts in the evening when there is a full moon in the sky. People of all walks of life carry their Krathongs to the nearby rivers. After lighting candles and joss-sticks and making a wish, they gently place the Krathongs on the water and let them drift away till they go out of sight.