Jeonggan is a traditional Korean method of timekeeping that uses a unique calendar system. It divides the year into 24 solar terms, which are based on the position of the sun. Each term lasts about 15 days and helps people understand seasonal changes, guiding agricultural activities and daily life. The jeonggan system is closely linked to the lunar calendar, which is also significant in Korean culture. This method emphasizes the importance of nature and its cycles, reflecting the harmony between humans and the environment. It remains a vital part of Korea's cultural heritage and agricultural practices.