Holiday lookup
Input: Convert a solar birthday to lunar
Result: Useful for family events and traditional holidays
Lunar Calendar Converter
Convert between solar (Gregorian) and lunar calendar dates easily and accurately. Includes traditional holiday dates and supports a wide range of years.
Solar Date
Notes
- • Supports dates from 1900 to 2100.
- • For years with leap months, you can select whether the month is a leap month.
- • Lunar calculations are based on Korea Astronomy and Space Science Institute data.
Formula and decision logic
Lunar conversion maps a solar calendar date to the supported lunar calendar table for the same year range, including leap month handling when applicable.
Solar date <-> lunar date conversion follows the supported calendar data for the selected year
Worked examples
Leap month check
Input: Lunar date in a leap month year
Result: Requires the leap-month flag to avoid the wrong solar output
How to use this calculator
- 1Enter a solar (Gregorian) or lunar date
- 2Select the conversion direction
- 3View the converted date and any associated holidays
How to read the result
- Leap month years need extra attention because the same lunar month number can appear twice.
- This is especially useful for cultural events, memorial dates, and recurring family schedules.
Common input mistakes
- Ignoring the leap month option when the selected year requires it.
- Assuming lunar and solar dates align to the same day-of-month pattern every year.
Frequently asked questions
What is the lunar calendar?
The lunar calendar is based on the cycles of the Moon and is used in many Asian cultures for traditional holidays and events.
How accurate is the conversion?
The converter uses precise astronomical algorithms and is accurate for dates within the supported range.
Does it show traditional holidays?
Yes, major traditional holidays like Lunar New Year and Mid-Autumn Festival dates are included.