Rokuyou Calendar
Check Taian, Butsumetsu & more for any date.
Monthly calendar view with lunar date calculation.
📋 Special Dates List Extraction
Extract and view specific Rokuyou dates (e.g. Taian, Tomobiki) for a selected month or an entire year. Perfect for finding auspicious days for weddings, moving, or ceremonies over a wide range of dates.
⚠️ Rokuyou is a traditional calendar annotation with no scientific basis. Use it as cultural reference only.
About
The Rokuyou Calendar tool lets you instantly check the Rokuyou day type (Taian, Butsumetsu, Tomobiki, etc.) for any date by converting it from the Gregorian calendar to the traditional Japanese lunar calendar. The monthly view shows the entire month's Rokuyou at a glance, perfect for planning weddings, move-ins, and auspicious events.
How to Use
Navigate Month
Use Prev/Next buttons to go to the month you want to check.
View Rokuyou
Each date shows its Rokuyou type in color-coded badges.
Date Lookup
Use the date picker below to check a specific date's Rokuyou and lunar date.
Glossary
- Rokuyou (六曜)
- A traditional Japanese calendar annotation system with 6 types indicating the luck of each day.
- Taian (大安)
- The luckiest day. Good for weddings, moving, business openings.
- Butsumetsu (仏滅)
- The unluckiest day. Traditionally avoided for auspicious events.
- Tomobiki (友引)
- Mixed luck—good for happy events except funerals. Noon is considered inauspicious.
- Sensho (先勝)
- Lucky in the morning, unlucky in the afternoon. Good for urgent matters.
- Senbu (先負)
- Unlucky in the morning, lucky in the afternoon. A calm, unhurried day.
- Shakkou (赤口)
- Only noon is lucky. A day associated with fire and sharp objects.
- Lunar Calendar
- Traditional Japanese calendar (Tenpo Calendar) used until 1872. Rokuyou is based on the lunar month and day.
FAQ
- Q.How is Rokuyou calculated?
- The date is converted to the traditional lunar calendar, and the sum of the lunar month and day is divided by 6 to determine the Rokuyou type.
- Q.Is my data sent to a server?
- No. All calculations are done in JavaScript in your browser with no network requests.
- Q.Can I look up past dates?
- Yes. The tool works accurately for dates from 1900 to 2100.
- Q.Is Rokuyou scientifically valid?
- No. Rokuyou is a traditional cultural annotation. Please use it as a cultural reference only.
Use Cases
Wedding Planning
Choose a Taian or Tomobiki day for your ceremony.
Moving Day
Find an auspicious day for your new home.
Ceremonies
Plan shrine visits and rites on lucky days.
Business Launch
Choose an auspicious opening date.