Lunar Calendar
Chinese Lunar Date Converter
Uses the runtime Chinese calendar formatter to expose lunar month, day, related year, year name, and leap-month notes.
Use the tool
Fill in only the planning details needed for this calculation. Do not enter private medical, financial, legal, or identification data.
Methodology
How this tool works
Gregorian-to-lunar conversion uses Intl.DateTimeFormat with the Chinese calendar and the selected timezone. Lunar-to-Gregorian search scans the relevant Gregorian range for matching related year, month, day, and leap-month status.
Cultural variation notes
- Temple calendars may label festivals by local timezone and local convention.
- A lunar date can fall on different Gregorian dates across timezones near midnight.
- Leap months are not interchangeable with ordinary months unless a family or temple says so.
FAQ
Frequently asked questions
Does this support leap months?
Where the runtime exposes a leap marker, Bai Bai includes it and can search for it. Always verify important temple dates with the temple calendar.
Why ask for timezone?
A Gregorian date is interpreted at local noon in the selected timezone to avoid accidental date shifts.
Can I convert historical dates?
The tool works best for modern planning dates. Historical calendar conversion can involve reforms and local records outside this tool's scope.