01
Ichiryū Manbaibi
一粒万倍日A day traditionally associated with growth and new beginnings.
Good forPurchases · New habits · New ventures
KujigoyomiA calendar for exploring Japanese lucky daysA Japanese calendar tradition, made easy to explore.
Looking for a meaningful day to buy a lottery ticket?
Kujigoyomi helps you discover traditional Japanese lucky days and plan with intention.
A Japanese tradition
What is a lucky day in Japan?
In Japan, some dates have long been considered auspicious. People may look to these traditions when making important decisions or celebrating new beginnings.
Lotterypurchases
Weddings
Moving
Starting abusiness
Newbeginnings
A small guide to the calendar
Meet the lucky days
These names come from different traditional calendar systems and are interpreted in different ways by different people.
02
Tensha-nichi
天赦日A rare day traditionally regarded as favorable for starting something new.
Good forFresh starts · Major decisions · Life changes
03
Taian
大安One of the six traditional Rokuyō calendar markers, often chosen for important occasions.
Good forWeddings · Celebrations · Important events
04
Caution days
Some datesSome calendar markers are traditionally approached with extra care.
Good forPause · Check · Choose for yourself
ⓘ Cultural reference information — not a prediction or guarantee.
With Kujigoyomi
See lucky days in one clear calendar.
At a glance, check auspicious and caution days for any month. No need to search across different sites and calendars.
- Lucky days
- Auspicious days
- Caution days
Plan. Record. Remember.
1
Plan your purchase
Choose a day and save your plan.
2
Record your activity
Keep a simple history of your purchases.
History⋮
‹August 2026›
Total amount$80.004 entries
Aug 1 (Sat)$10.00
Jul 30 (Thu)$20.00
Jul 23 (Thu)$20.00
Jul 16 (Thu)$30.00
⌂Home▣Calendar▤History⚙Settings
3
Set reminders
Never miss an important day you’ve planned.
Frequently asked questions
About Kujigoyomi
What is Kujigoyomi?
Kujigoyomi is an app that helps you explore Japanese lucky and caution days, plan lottery purchases, track spending, and review your records.
What is a lucky day in Japan?
A lucky day is a date traditionally considered auspicious for purchases, weddings, celebrations, or new beginnings. Interpretations can vary.
What do Ichiryū Manbaibi and Tensha-nichi mean?
They are names used for traditional Japanese calendar markers. Ichiryū Manbaibi is associated with growth and new beginnings, while Tensha-nichi is a rare day traditionally regarded as favorable for a fresh start.
Will a lucky day improve my odds of winning?
No. Lucky days are cultural reference information and do not guarantee or improve lottery odds.
Can I get reminders for planned purchases?
Yes. You can receive reminders for your planned purchase at a time you choose.
Can I track how much I spend?
Yes. You can record purchases, review your history, and set a monthly budget.
A calmer way to choose your day
Use lucky days as a reference.
Choose your own day.
Kujigoyomi brings Japanese calendar traditions, purchase plans, spending, history, and reminders together in one place.