4/18 is Incense Day!This day was chosen as the components that make up the kanji of incense (香) are "一十八日", which mean 18th Day!
As for the month, it's chronicled in the "Nihon Shoki", one of Japan's oldest pieces of literature, that a large log of agarwood drifted ashore on Awaji Island on April 595. The locals enjoyed the smell it produced when burned, thus starting Japan's rich culture of incenseIncense is commonly made from materials known as fragrant wood which "give off a pleasant aroma when ignited."Unlike traditional aromas, incense is characterized by the smoke it emits when burned.Incense has relaxing and stress-relieving effects!
