Rokuyo Calendar & Lunar Date
Pick a date to instantly see its Rokuyo (Taian, Butsumetsu...), lunar date, Chinese zodiac and solar terms. Handy for choosing wedding, moving or opening dates.
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Rokuyo
Lunar date
Year (ganzhi)
Day (ganzhi)
Solar term
Done
Rokuyo Calendar & Lunar Date
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How to use
- 1
Pick a date
Choose a date with the picker, or press "Today" to jump to the current date.
- 2
Auto calculation
The Rokuyo, lunar date, ganzhi and solar term appear instantly.
- 3
Use it as a reference
Keep the result in mind when planning weddings, moves and other events.
Features
- Accurate Rokuyo for any date from 1900 to 2100
- Lunar date plus year and day ganzhi shown together
- Solar terms are included automatically
- Just pick a date - everything runs in your browser
Use cases
Plan a wedding or anniversary
Check the meaning of each Rokuyo to choose a date for your wedding or ceremony.
Schedule a move or opening
Consult the Rokuyo when planning a house move or a business opening date.
Plan events and trips
Look up the Rokuyo in advance when deciding on travel or event dates.
Details
Rokuyo are the six traditional calendar marks written on Japanese calendars: Sensho, Tomobiki, Senbu, Butsumetsu, Taian and Shakku. They are widely used as a reference when choosing dates for weddings, moves and grand openings.
Rokuyo are determined by the lunar calendar (lunisolar calendar) month and day. The Rokuyo of the first lunar day is fixed per month, and the cycle then repeats every six days. This tool uses the well-established lunar-javascript library for accurate conversion across 1900-2100.
Rokuyo are a centuries-old custom with no scientific basis for good or bad luck. Treat them as a cultural reference, not an absolute guide. All calculation happens in your browser - the date you enter is never sent to a server.
FAQ
What are the six kinds of Rokuyo?
Sensho, Tomobiki, Senbu, Butsumetsu, Taian and Shakku, repeating in that order.
What is the difference between Taian and Butsumetsu?
Taian is considered the luckiest day and is often chosen for weddings. Butsumetsu is considered the unluckiest and celebrations are usually avoided. These are traditional Japanese calendar customs, not science.
How is the Rokuyo determined?
It is decided by the lunar (lunisolar) calendar month and day. The Rokuyo of the first lunar day is fixed per month, and the cycle repeats every six days.
What date range is supported?
Any date between 1900 and 2100.
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Verified: Date input, Rokuyo/lunar/ganzhi display and out-of-range errors are covered by browser tests
Did you know?
Rokuyo originated from a Chinese calendar system and became widely used in Japan from around the Muromachi period.