Gregorian to Lunar Date Calculator
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For entertainment and self-reflection only. Not scientific, medical, financial, or relationship advice.
Gregorian date → approximate lunar year, month, and day. Day-count estimate for cultural reference.
Gregorian date
Lunar date (approx.)
2,026 / 6 / 27
Year / month / day on 2026-08-07 · simplified estimate
- Lunar year
- 2,026
- Lunar month
- 6
- Lunar day
- 27
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Gregorian to lunar calendar conversion
To express a solar calendar date in lunar terms, you need the lunar year boundary (Lunar New Year), the length of each month that year, and any intercalary (leap) month. Professional calendars publish these tables decades in advance.
This calculator estimates lunar month and day by counting days from Lunar New Year for the inferred lunar year, using fixed 29-day month blocks. It identifies the correct lunar year for dates near January and February but month/day results are approximate.
Example: a Gregorian date in mid-August 2026 falls in lunar year 2026 several months after February’s Lunar New Year. For Mid-Autumn Festival planning, cross-check lunar month 8 day 15 against a trusted almanac — simplified math may miss the exact day.
Common questions
How is the lunar year chosen near January?
If your date is before Lunar New Year in a Gregorian year, the calculator assigns the previous lunar year — the same rule as the zodiac animal calculator.
Can this replace a printed Chinese calendar?
No. Leap months and variable month lengths require full ephemeris data. Use this for rough exploration only.