Ichiryū-manbai-bi (一粒万倍日), “one grain, ten thousand fold”: All Dates in 2026
Just as one grain of rice grows into ten thousand, what you start on this day is said to grow big. It is considered good for opening a business, registering a marriage, buying lottery tickets or starting to save. Things you don't want to multiply, like borrowing money, are avoided.
Next: Nov 7, 2026 (Sat)
Every Ichiryū-manbai-bi in 2026
Open January–October (past months)
| Date and day eto | Rokuyō | Other notes |
|---|---|---|
| Jan 1 (Thu) 乙亥 | Taian | Fujōju-bi |
| Jan 2 (Fri) 丙子 | Shakkō | – |
| Jan 5 (Mon) 己卯 | Senbu | – |
| Jan 14 (Wed) 戊子 | Shakkō | – |
| Jan 17 (Sat) 辛卯 | Senbu | Fujōju-bi, Doyō begins, Doyō rest day |
| Jan 26 (Mon) 庚子 | Senshō | Doyō |
| Jan 29 (Thu) 癸卯 | Butsumetsu | Doyō, Doyō rest day |
| Feb 8 (Sun) 癸丑 | Tomobiki | – |
| Feb 13 (Fri) 戊午 | Senshō | – |
| Feb 20 (Fri) 乙丑 | Butsumetsu | – |
| Feb 25 (Wed) 庚午 | Senbu | – |
| Mar 4 (Wed) 丁丑 | Butsumetsu | – |
| Mar 5 (Thu) 戊寅 | Taian | Tiger day, Tenshabi, Sanrinbō |
| Mar 12 (Thu) 乙酉 | Shakkō | – |
| Mar 17 (Tue) 庚寅 | Taian | Tiger day, Sanrinbō |
| Mar 24 (Tue) 丁酉 | Senshō | – |
| Mar 29 (Sun) 壬寅 | Shakkō | Tiger day, Sanrinbō |
| Apr 8 (Wed) 壬子 | Butsumetsu | – |
| Apr 11 (Sat) 乙卯 | Senshō | – |
| Apr 20 (Mon) 甲子 | Shakkō | Kinoe-ne day, Doyō |
| Apr 23 (Thu) 丁卯 | Senbu | Doyō |
| May 2 (Sat) 丙子 | Shakkō | Doyō |
| May 5 (Tue) 己卯 | Senbu | – |
| May 6 (Wed) 庚辰 | Butsumetsu | – |
| May 17 (Sun) 辛卯 | Butsumetsu | – |
| May 18 (Mon) 壬辰 | Taian | – |
| May 29 (Fri) 癸卯 | Butsumetsu | – |
| May 30 (Sat) 甲辰 | Taian | – |
| Jun 12 (Fri) 丁巳 | Shakkō | Snake day |
| Jun 13 (Sat) 戊午 | Senshō | Fujōju-bi |
| Jun 24 (Wed) 己巳 | Tomobiki | Tsuchinoto-mi day |
| Jun 25 (Thu) 庚午 | Senbu | – |
| Jul 6 (Mon) 辛巳 | Tomobiki | Snake day |
| Jul 7 (Tue) 壬午 | Senbu | Sanrinbō, Jushi-bi |
| Jul 10 (Fri) 乙酉 | Shakkō | – |
| Jul 19 (Sun) 甲午 | Taian | Tenshabi, Sanrinbō, Jushi-bi, Fujōju-bi |
| Jul 22 (Wed) 丁酉 | Tomobiki | Doyō |
| Jul 31 (Fri) 丙午 | Taian | Sanrinbō, Jushi-bi, Doyō |
| Aug 3 (Mon) 己酉 | Tomobiki | Doyō |
| Aug 13 (Thu) 己未 | Senshō | – |
| Aug 18 (Tue) 甲子 | Shakkō | Kinoe-ne day |
| Aug 25 (Tue) 辛未 | Senshō | – |
| Aug 30 (Sun) 丙子 | Shakkō | – |
| Sep 6 (Sun) 癸未 | Senshō | – |
| Sep 7 (Mon) 甲申 | Tomobiki | – |
| Sep 14 (Mon) 辛卯 | Taian | – |
| Sep 19 (Sat) 丙申 | Butsumetsu | – |
| Sep 26 (Sat) 癸卯 | Taian | – |
| Oct 1 (Thu) 戊申 | Butsumetsu | Tenshabi |
| Oct 11 (Sun) 戊午 | Senbu | Sanrinbō, Fujōju-bi |
| Oct 14 (Wed) 辛酉 | Shakkō | – |
| Oct 23 (Fri) 庚午 | Senbu | Sanrinbō, Doyō |
| Oct 26 (Mon) 癸酉 | Shakkō | Doyō, Doyō rest day |
| Date and day eto | Rokuyō | Other notes |
|---|---|---|
| Nov 4 (Wed) 壬午 | Senbu | Sanrinbō, Fujōju-bi, Doyō |
| Nov 7 (Sat) 乙酉 | Shakkō | First Tori-no-ichi |
| Nov 8 (Sun) 丙戌 | Senshō | Dog day |
| Nov 19 (Thu) 丁酉 | Tomobiki | Second Tori-no-ichi |
| Nov 20 (Fri) 戊戌 | Senbu | Dog day, Fujōju-bi |
| Dec 1 (Tue) 己酉 | Tomobiki | – |
| Dec 2 (Wed) 庚戌 | Senbu | Dog day |
| Dec 15 (Tue) 癸亥 | Taian | – |
| Dec 16 (Wed) 甲子 | Shakkō | Kinoe-ne day, Tenshabi |
| Dec 27 (Sun) 乙亥 | Taian | – |
| Dec 28 (Mon) 丙子 | Shakkō | – |
Days that overlap with other lucky days
Mar 5 (Tiger day + Tenshabi + Ichiryū-manbai-bi) – also Sanrinbō, so not for building (some regions avoid moving too), Mar 17 (Tiger day + Ichiryū-manbai-bi) – also Sanrinbō, so not for building (some regions avoid moving too), Mar 29 (Tiger day + Ichiryū-manbai-bi) – also Sanrinbō, so not for building (some regions avoid moving too), Apr 20 (Kinoe-ne day + Ichiryū-manbai-bi) – during Doyō, when some avoid moving soil (moving house, groundbreaking), Jun 24 (Tsuchinoto-mi day + Ichiryū-manbai-bi), Aug 18 (Kinoe-ne day + Ichiryū-manbai-bi), Oct 1 (Tenshabi + Ichiryū-manbai-bi), Dec 16 (Kinoe-ne day + Tenshabi + Ichiryū-manbai-bi)
Days that fall on Fujōju-bi or Jushi-bi are left out. When Tenshabi and Fujōju-bi coincide, some schools say Tenshabi cancels the bad luck and others give Fujōju-bi priority.
How to use Ichiryū-manbai-bi
A good day for buying or starting to use a new wallet, buying lottery tickets, opening a bank account or taking up a new hobby.
The meaning of these days is explained in Lucky days and festivals of the eto, and the calculation in How the calendar is calculated. Almanac notes can differ between traditions.