Japanese Lucky Days Calendar
See Japan's senjitsu — ichiryū manbai-bi, tensha-nichi, the days of the tiger and the snake, tsuchinoto-mi and kinoe-ne — laid out on a monthly calendar, together with the inauspicious sanrinbō and fujōju-bi. Days where auspicious marks overlap are listed for you, and picking any date shows the sexagenary day, solar-term month, lunar date and rokuyō it was derived from. Everything runs in your browser.
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|
- TenshaTensha-nichi
- IchiryūIchiryū manbai-bi
- TsuchinotoTsuchinoto-mi (strongest snake day)
- SnakeDay of the Snake
- TigerDay of the Tiger
- Kinoe-neKinoe-ne (start of the 60-day cycle)
- SanrinbōSanrinbō (avoid for construction)
- FujōjuFujōju-bi (nothing comes to fruition)
Click a date — or move with the arrow keys and press Enter — to see its marks and the basis for them (sexagenary day, solar-term month, lunar date, rokuyō). Green labels come first and are the auspicious marks; the red ones below them are the days to avoid. Both can land on the same day, and the usual reading is that they cancel each other out.
Japanese lucky days in 2026 and 2027
These "selected days" are not divined one by one: they follow mechanically from the sexagenary cycle and from the solar-term months. Tensha-nichi is the day of a fixed sexagenary sign for each season (spring Tsuchinoe-tora, summer Kinoe-uma, autumn Tsuchinoe-saru, winter Kinoe-ne) and occurs 5–7 times a year; ichiryū manbai-bi is fixed by two zodiac branches per solar-term month, about 60 days a year. Below are 2026 and 2027; the tool above covers any month from 1900 to 2099, along with the inauspicious sanrinbō and fujōju-bi.
Tensha-nichi in 2026 and 2027
| Year | Date | Sexagenary day | Overlap |
|---|---|---|---|
| 2026 | Mar 5 (Thu) | Tsuchinoe-tora 戊寅 | ◎ also ichiryū manbai-bi |
| 2026 | May 4 (Mon) | Tsuchinoe-tora 戊寅 | |
| 2026 | May 20 (Wed) | Kinoe-uma 甲午 | |
| 2026 | Jul 19 (Sun) | Kinoe-uma 甲午 | ◎ also ichiryū manbai-bi |
| 2026 | Oct 1 (Thu) | Tsuchinoe-saru 戊申 | ◎ also ichiryū manbai-bi |
| 2026 | Dec 16 (Wed) | Kinoe-ne 甲子 | ◎ also ichiryū manbai-bi |
| 2027 | Feb 28 (Sun) | Tsuchinoe-tora 戊寅 | |
| 2027 | Apr 29 (Thu) | Tsuchinoe-tora 戊寅 | |
| 2027 | May 15 (Sat) | Kinoe-uma 甲午 | |
| 2027 | Jul 14 (Wed) | Kinoe-uma 甲午 | ◎ also ichiryū manbai-bi |
| 2027 | Sep 26 (Sun) | Tsuchinoe-saru 戊申 | ◎ also ichiryū manbai-bi |
| 2027 | Dec 11 (Sat) | Kinoe-ne 甲子 | ◎ also ichiryū manbai-bi |
2026
| Month | Ichiryū manbai-bi | Day of the Tiger | Day of the Snake | Tsuchinoto-mi | Kinoe-ne |
|---|---|---|---|---|---|
| Jan | 1, 2, 5, 14, 17, 26, 29 | 4, 16, 28 | 7, 19, 31 | — | — |
| Feb | 8, 13, 20, 25 | 9, 21 | 12, 24 | 24 | 19 |
| Mar | 4, 5, 12, 17, 24, 29 | 5, 17, 29 | 8, 20 | — | — |
| Apr | 8, 11, 20, 23 | 10, 22 | 1, 13, 25 | 25 | 20 |
| May | 2, 5, 6, 17, 18, 29, 30 | 4, 16, 28 | 7, 19, 31 | — | — |
| Jun | 12, 13, 24, 25 | 9, 21 | 12, 24 | 24 | 19 |
| Jul | 6, 7, 10, 19, 22, 31 | 3, 15, 27 | 6, 18, 30 | — | — |
| Aug | 3, 13, 18, 25, 30 | 8, 20 | 11, 23 | 23 | 18 |
| Sep | 6, 7, 14, 19, 26 | 1, 13, 25 | 4, 16, 28 | — | — |
| Oct | 1, 11, 14, 23, 26 | 7, 19, 31 | 10, 22 | 22 | 17 |
| Nov | 4, 7, 8, 19, 20 | 12, 24 | 3, 15, 27 | — | — |
| Dec | 1, 2, 15, 16, 27, 28 | 6, 18, 30 | 9, 21 | 21 | 16 |
2027
| Month | Ichiryū manbai-bi | Day of the Tiger | Day of the Snake | Tsuchinoto-mi | Kinoe-ne |
|---|---|---|---|---|---|
| Jan | 9, 12, 21, 24 | 11, 23 | 2, 14, 26 | — | — |
| Feb | 2, 8, 15, 20, 27 | 4, 16, 28 | 7, 19 | 19 | 14 |
| Mar | 4, 7, 12, 19, 24, 31 | 12, 24 | 3, 15, 27 | — | — |
| Apr | 6, 15, 18, 27, 30 | 5, 17, 29 | 8, 20 | 20 | 15 |
| May | 12, 13, 24, 25 | 11, 23 | 2, 14, 26 | — | — |
| Jun | 5, 7, 8, 19, 20 | 4, 16, 28 | 7, 19 | 19 | 14 |
| Jul | 1, 2, 14, 17, 26, 29 | 10, 22 | 1, 13, 25 | — | — |
| Aug | 7, 8, 13, 20, 25 | 3, 15, 27 | 6, 18, 30 | 18 | 13 |
| Sep | 1, 6, 9, 14, 21, 26 | 8, 20 | 11, 23 | — | — |
| Oct | 3, 9, 18, 21, 30 | 2, 14, 26 | 5, 17, 29 | 17 | 12 |
| Nov | 2, 14, 15, 26, 27 | 7, 19 | 10, 22 | — | — |
| Dec | 10, 11, 22, 23 | 1, 13, 25 | 4, 16, 28 | 16 | 11 |
How to use
Move between months with Prev and Next, or type a year and pick a month. Each cell carries small labels for the marks that fall on that day. Tensha (tensha-nichi) and Ichiryū (ichiryū manbai-bi) are the two that matter most; Tiger, Snake, Tsuchinoto-mi and Kinoe-ne are zodiac and sexagenary days. The red labels — Sanrinbō and Fujōju — mark days to avoid, and they can share a cell with the auspicious ones. Click a date and the panel below shows every mark plus the basis it was derived from: the sexagenary day, the solar-term month, the lunar date and the rokuyō. Below the calendar you get the year's tensha-nichi and the days where auspicious marks overlap. Tensha-nichi occurs only 5 to 7 times a year, so working backwards from that list is the quickest way to fix a date well in advance.
What each mark means and how it is fixed
| Mark | Japanese | How it is fixed | Frequency | Common reading |
|---|---|---|---|---|
| Tensha-nichi | 天赦日 | A fixed sexagenary day per season (spring 戊寅, summer 甲午, autumn 戊申, winter 甲子) | 5–7 a year | "The day heaven forgives everything." Treated as the most auspicious mark in the almanac. |
| Ichiryū manbai-bi | 一粒万倍日 | Two fixed zodiac branches per solar-term month | 57–64 a year | One grain yields ten thousand. Favoured for openings, investments and sowing — anything you want to multiply. |
| Day of the Tiger | 寅の日 | Zodiac branch is the tiger (every 12 days) | 30–31 a year | A tiger travels a thousand miles and returns, so money spent is said to come back. Associated with wealth. |
| Day of the Snake | 巳の日 | Zodiac branch is the snake (every 12 days) | 30–31 a year | The snake serves Benzaiten, so the day suits prayers for wealth and for the arts. |
| Tsuchinoto-mi | 己巳の日 | Sexagenary day is 己巳 (every 60 days) | 6–7 a year | The strongest of the snake days, known as a day to visit a Benzaiten shrine. |
| Kinoe-ne | 甲子の日 | Sexagenary day is 甲子 (every 60 days) | 6–7 a year | The first day of the sexagenary cycle. Good for starting things, and what starts is said to last. |
| Sanrinbō | 三隣亡 | One fixed zodiac branch per solar-term month | 28–34 a year | Avoided for raising a frame or breaking ground. Still consulted in the construction trade. |
| Fujōju-bi | 不成就日 | A combination of lunar month and lunar day | 47–50 a year | Nothing comes to fruition, so beginnings, vows and contracts are avoided. |
All of these are customary readings with no scientific basis. Treat them as a tiebreaker when you need one, not as a constraint.
Reading the overlaps
Because the marks are fixed by different yardsticks, several land on the same day. The one people look for is tensha-nichi together with ichiryū manbai-bi, and it is never absent: every year from 1900 to 2099 has between two and four (across those 200 years, 41 have two, 110 have three and 49 have four). There is no such thing as a year without one.
That is not coincidence — it follows from the definitions. The zodiac branch inside each season's tensha-nichi sign is also one of the ichiryū manbai-bi branches for at least one of the solar-term months that season can contain.
| Season | Tensha-nichi sign | Solar-term months it can fall in | Months where it is also ichiryū manbai-bi |
|---|---|---|---|
| Spring | 戊寅 (tiger) | 1 (tiger), 2 (rabbit), 3 (dragon) | month 2 — its branches are tiger and rooster |
| Summer | 甲午 (horse) | 4 (snake), 5 (horse), 6 (goat) | months 5 (snake, horse) and 6 (horse, rooster) |
| Autumn | 戊申 (monkey) | 7 (monkey), 8 (rooster), 9 (dog) | month 8 — its branches are rabbit and monkey |
| Winter | 甲子 (rat) | 10 (boar), 11 (rat), 12 (ox) | months 11 (boar, rat) and 12 (rabbit, rat) |
Spring and autumn overlap in one of their three months, summer and winter in two. Since each season carries one or two tensha-nichi, a good share of them land on an ichiryū manbai-bi. Were the two unrelated, 5–7 tensha-nichi against 57–64 ichiryū manbai-bi days — about one day in six — would predict roughly one coincidence a year. The real figure is about three times that, purely because of how the tables mesh.
Overlaps run the other way too. Since ichiryū manbai-bi multiplies whatever begins, an overlap with fujōju-bi or sanrinbō is read as cancelling the benefit, or as multiplying the harm instead. This tool puts auspicious and inauspicious labels in the same cell rather than hiding one, so a day that is both ichiryū manbai-bi and fujōju-bi cannot slip past you.
Counts published elsewhere sometimes differ for the same year, depending on whether days carrying an inauspicious mark are excluded. In 2026, July 19 is tensha-nichi and ichiryū manbai-bi but also fujōju-bi and sanrinbō, so dropping it gives a count of three rather than four. Neither is wrong, so this tool keeps such days and annotates them instead of deciding for you.
Three yardsticks: solar-term month, sexagenary cycle, lunar calendar
The marks look irregular on the calendar because they are not measured the same way. Ichiryū manbai-bi, tensha-nichi and sanrinbō use the solar-term month — the month that begins at Risshun, Keichitsu, Seimei and so on. Solar-term month 1 starts at Risshun, around February 4, so it is more than a month out of step with the calendar month. Combine that with the sexagenary cycle, which turns over every 60 days, and the date is fixed. Fujōju-bi alone is keyed to the lunar calendar (Tenpō), as is the rokuyō. That is why ichiryū manbai-bi re-shuffles at each solar term while fujōju-bi re-shuffles at each new moon. Since the tool reports the sexagenary day, solar-term month and lunar date for whatever you click, you can always see why a given mark appears.
Worked example: 2026
- Six tensha-nichi in 2026 → March 5, May 4, May 20, July 19, October 1, December 16. Spring (戊寅) and summer (甲午) each come round twice this year
- Four of them also fall on ichiryū manbai-bi → March 5, July 19, October 1, December 16. May 4 and May 20 are tensha-nichi only — May's ichiryū manbai-bi are the 2nd, 5th, 6th, 17th, 18th, 29th and 30th, and the 20th is not among them
- March 5 is also sanrinbō → it carries tensha-nichi, ichiryū manbai-bi, the day of the tiger and Taian. But the sanrinbō of a 卯 month is the tiger day, so being a tiger day is exactly what makes March 5 sanrinbō as well. Even the best overlap can carry an inauspicious mark, so for breaking ground you would pick a different date
- A winter tensha-nichi is always a kinoe-ne → December 16 is both, because the winter tensha-nichi is defined as the 甲子 day
- Why March 5 works out that way → its sexagenary day is 戊寅 and its solar-term month is the 2nd (卯). The spring tensha-nichi is defined as 戊寅, and the ichiryū manbai-bi of a 卯 month are the tiger and rooster days, so both land together
Choosing by purpose
Each mark attaches to particular occasions. If you already know what the date is for, look only for the marks in the middle column and check whether the ones on the right share the day.
| Occasion | Marks to look for | Marks to check against |
|---|---|---|
| Buying or first using a wallet | Tiger, snake and tsuchinoto-mi days (wealth), ichiryū manbai-bi | Fujōju-bi |
| Opening a business or a shop | Ichiryū manbai-bi, tensha-nichi | Fujōju-bi, sanrinbō |
| Breaking ground, raising a frame | Tensha-nichi, Taian | Sanrinbō — the one that matters most here |
| Signing, applying, registering | Tensha-nichi, ichiryū manbai-bi | Fujōju-bi |
| Shrine visits, vows, starting lessons | Tsuchinoto-mi, snake days, kinoe-ne | Fujōju-bi |
| Taking on a loan | — (ichiryū manbai-bi is conventionally avoided) | Fujōju-bi |
The logic behind the last row is that ichiryū manbai-bi multiplies whatever starts on it, so it is held to suit anything you want to grow and to work against anything — debt, a guarantee — that you would rather not.
How much weight to give them
Senjitsu belong to the almanac tradition rather than to anything demonstrable; there is no scientific basis for them. They passed from Edo-period almanacs into the calendars sold today, and some have murky origins. Sanrinbō is the clearest case: it began as 三輪宝 in Edo-period almanacs, an auspicious day for raising a house or a storehouse, and is thought to have flipped to its opposite when the note "good" was miscopied as "bad", after which the name was rewritten with the homophonous characters 三隣亡 — "ruin for three neighbours". In practice the sane use is not to insist on a particular date but to let it break a tie when several dates would do equally well: buying a wallet, opening a business, signing something, visiting a shrine. Sacrificing a genuinely better date — one that suits your health, your budget or the other party — in order to hit an auspicious mark gets the priorities backwards. Note that rokuyō labels such as Taian and Butsumetsu, which come up for weddings and funerals, form a separate system fixed purely by the lunar month and day.
Related tools
For Taian and Butsumetsu month by month, see the Rokuyō Calendar; for Risshun, Keichitsu and the other boundaries of the solar-term months, see the 24 Solar Terms. If public holidays matter to the date, check Japanese Public Holidays.