marks the day when the Lord Buddha delivered his first sermon known as “Dhammachakkappavattanasutta” (ธัมมจักกัปปวัตนสูตร) which he preached to five ascetics at Benares in India over 2,500 years ago, as result all of them attained enlightenment and was ordained by the Buddha as the first ever Buddhist monks. Hence, the origin of Buddhist monks, we see wearing orange color saffron.