논문 상세보기
pp.407-420
We study the operation of a lunisolar calendar in Korea and its time data calculation method. The dates based on the lunisolar calendar have been conventionally used in Korea after the Gregorian calendar was introduced in 1896. With the Astronomy Act enacted in 2010, the lunisolar calendar is presently being used as an official calendar along with the Gregorian calendar. However, no institutionalized regulations have been provided on the time data calculation method by the lunisolar calendar. The Korea Astronomy and Space Science Institute very recently established the regulations on the lunisolar calendar operation in Korea. We introduce the regulations together with historical substances and analyze the time data calculated according to the regulations for 600 years from 1901 to 2500. From our study, we find that the value of ΔT (i.e., the difference between the terrestrial time and the universal time) is the most critical parameter causing uncertainty on the data. We also find that all new Moon days in the almanacs agree with our calculations since 1912. Meanwhile, we find that new Moon and winter solstice times are found to be very close to midnight in 38 and five cases, respectively. For instance, the new Moon time on January 14, 2097 is 0 h 0 min 8 s. In this case, deciding the first day (i.e., new moon day) in a lunar month is difficult because of the large uncertainty in the value of ΔT. Regarding with a lunar leap month, we find that the rules of inserting the leap month do not apply for 17 years. In conclusion, we believe that our findings are helpful in determining calendar days by using the lunisolar calendar.
1. 서론
2. 우리나라의 음력 운용 체계
2.1. 음력의 생산과 발표, 그리고 사용
2.2. 음력 운용 근거
2.3. 음력 운용지침
3. 계산 알고리즘
3.1. 음력 결정
3.2. 계산된 음력의 정확도
4. 음력 날짜 검증
4.1. 역서에 기록된 음력 날짜와 비교
4.2. 중국 음력과 날짜 비교
5. 음력 계산 방법에 대한 고찰
5.1. 24기와 음력
5.2. 19년 7윤법
6. 결론
REFERENCES
