Chinese zodiac month sign calculator
The month animal describes your inner nature in Chinese astrology. Find the month of any date — as a lunar month (with leap months) or as a solar month of the Four Pillars calendar.
Result
Example — enter your own details and press Calculate.
Lunar month 5
- Starts
- 24 May 1990
- Ends
- 22 Jun 1990
Lunar months and solar months
A lunar month starts on the day of the new moon in China. Twelve months make a year of about 354 days, so roughly every third year receives a leap month — the first month that contains no principal solar term. Month 1 is the Tiger month, month 11 always contains the winter solstice.
Four Pillars (Ba Zi) astrology uses solar months instead: each begins at one of the twelve "jie" solar terms, when the Sun's longitude reaches 315°, 345°, 15° and so on. The Tiger month starts at Li Chun (about 4 February). The month's heavenly stem follows from the year's stem.
Use it in your app
This calculator is the GET /api/v2/zodiac/month endpoint of the Feng Shui API. Get a free key, then:
curl -H "X-API-Key: $FENGSHUI_API_KEY" \ "https://fengshui-api.com/api/v2/zodiac/month?date=1990-06-15"
Full reference in the API docs; ready-to-run programs in 8 languages on the code examples page.
Frequently asked questions
What is a leap month?
An extra month inserted to keep the lunar calendar in step with the seasons. It repeats the number of the month before it, e.g. the leap 5th month of 1990.
Which calendar should I use for Ba Zi?
The solar calendar — Four Pillars months change at the solar terms, not at new moons.
Is this calculator free?
Yes. The web calculator needs no account. For automated use, create a free account to get an API key.
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