Lunar-Solar Calendar Converter
Convert between lunar and solar calendar dates with Ganji year info.
근사값 기반 변환 결과입니다.
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Overview
The Lunar-Solar Calendar Converter translates dates between the lunar calendar (lunisolar calendar) and the Gregorian (solar) calendar. It is useful for finding the solar dates of Korean holidays like Seollal and Chuseok, converting lunar birthdays, checking ancestral memorial dates, and determining the Chinese zodiac sign.
Formula
The lunar calendar is based on the synodic month (average 29.53 days). • Lunar month: 29 days (short month) or 30 days (long month) • Lunar year: approximately 354 days (about 11 days shorter than a solar year) • Leap month: Added roughly every 2–3 years to align with the seasons • Sexagenary cycle: 10 Heavenly Stems × 12 Earthly Branches = 60-year cycle • Zodiac animal: Determined by the Earthly Branch of the birth year (12 animals)
How to Use
- 1Select the conversion direction (Lunar → Solar or Solar → Lunar).
- 2Enter the date (year, month, day) to convert.
- 3Check for a leap month and select the leap month option if applicable.
- 4The converted date is displayed along with the day of the week, sexagenary cycle, and zodiac animal.
- 5Key lunar calendar holidays (Seollal, Chuseok, etc.) for the selected year are also shown.
Tips
- ✔A lunar birthday falls on a different solar date each year, so you need to check annually.
- ✔In years with a leap month, the lunar calendar has 13 months, with one month appearing twice.
- ✔Korean holidays like Seollal (Lunar Jan 1) and Chuseok (Lunar Aug 15) fall on different solar dates each year.
FAQ
Q. What is a leap month?
Because the lunar year is about 11 days shorter than the solar year, an extra month is inserted roughly every 2–3 years to keep the lunar calendar aligned with the seasons. In a leap year, the lunar calendar has 13 months.
Q. Does a lunar birthday fall on the same solar date every year?
No. Because the lunar and solar calendars have different cycle lengths, the solar date corresponding to a lunar birthday changes every year. For example, Seollal (Lunar January 1) can fall anywhere from late January to mid-February on the solar calendar.
Q. How are the sexagenary cycle and zodiac animal determined?
The sexagenary cycle combines 10 Heavenly Stems and 12 Earthly Branches into a 60-year cycle. The zodiac animal is determined by the Earthly Branch of the birth year, cycling through 12 animals: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, and Pig.
Q. What date range can the converter handle?
Typically, lunar-solar conversion is supported from 1900 to 2100. Dates outside this range involve complex astronomical calculations and may have reduced accuracy.
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