It's holiday tomorrow but it's Sunday. It's the National Foundation Day of Korea or called Gaecheonjeol in Korean. It is always celebrated every October 3rd. It's the anniversary of Dan-gun's Accession. It's the day when Tangun (the mythical "first Korean") founded the country about 4,300 years ago. On this day, national commemorating ceremony is held in National Cemetery. This holiday celebrates the creation of the state of Gojoseon (ancient Korea) founded by Dangun Wanggeom in the year 2333 BC.