Daeboreum (literally “Great Full Moon”) is a Korean holiday that celebrates the first full moon of the new year of the lunar Korean calendar which is the Korean version of the First Full Moon Festival. This holiday is accompanied by many traditions. The 2017 date is February 11, in 2018 the date is March 2.

Many customs and games are traditional on this day, which is also sometimes called the Great Fifteenth. The Fifteenth, or Full Moon Day, marks the end of the New Year season in Korea and is regarded as the final opportunity to ensure good luck for the coming year.

It is considered lucky on this day for people to routinely repeat their actions nine times—particularly children, who compete with each other to see how many “lucky nines” they can achieve before the day is over.

It is common to celebrate the Great Fifteenth with kite flying and kite fighting, which is done by covering the strings with glass dust and then crossing them so that they rub together as they fly. The string held by the more skillfully manipulated kite eventually cuts through the string of the less successful kite, sending it crashing to the ground.

Another popular sport on this day is the tug-of-war. In some areas, an entire town or county is divided into two opposing teams. It is widely believed that the winners will bring in a plentiful crop and will be protected from disease in the coming year.

One familiar custom is to crack nuts with one’s teeth. It is believed that this practice will help keep one’s teeth healthy for the year.

In the countryside, people climb mountains, braving cold weather, trying to catch the first rise of the moon. It is said that the first person to see the moon rise will have good luck all year or a wish will be granted.

People play the traditional game named Jwibulnori (쥐불놀이) the night before Daeboreum. They burn the dry grass on ridges between rice fields while children whirl around cans full of holes, through which charcoal fire blaze. These cans fertilize the fields and get rid of harmful worms that destroy the new crops.

For breakfast, a five-“grain” rice consisting of rice, millet, Indian millet, beans, and red beans is served (gok includes grains and beans). This is eaten with various dried herbs. One of the special foods of Daeboreum is Yaksik (약식 / 藥食). This treat is made of glutinous rice, chestnuts, pinenuts, honey, sauce, and sesame oil.

Also there is wine drinking for Daeboreum. It called ‘Ear-quickening wine (귀밝이술)’. This alcohol means that if someone drank this alcohol, he or she would be quick to hear and hear good news for one year.

On this day, Koreans traditionally do not give any food to dogs since it is believed that dogs that eat on this day will contract gad flies and become ill during the coming summer.

Sources: Wikipedia and Answers.com