Inori no Mori祈りの杜working title

A guide to 47 calendar annotations

Explore Japanese calendar traditions, observance days and shrine events. Dates and traditional hours are shown in Japan Standard Time (UTC+09:00).

Supported dates: 1 January 2026–31 December 2027. Calendar beliefs differ across regions and traditions. This is not a prediction, a guarantee, or a complete schedule for every shrine and temple. Check the institution’s current announcement before attending.

These entries describe historical beliefs. Different calendars can use different rules. Astronomy and calendar beliefs are distinct: the National Astronomical Observatory provides the astronomical dates, not judgments of good or bad fortune.

Ichiryū Manbaibi — one seed multiplied ten thousandfold

A day traditionally celebrating beginnings, likened to a small seed growing greatly.

How this site assigns the day

Two specified zodiac branches are assigned in each solar-term month.

Tenshanichi — heavenly pardon

A day when the deities were said to gather in heaven and heaven to pardon all things; old almanacs considered it a supremely auspicious day for all activities.

How this site assigns the day

Tsuchinoe-tora in spring, kinoe-uma in summer, tsuchinoe-saru in autumn, and kinoe-ne in winter. Seasons change at the solar terms Beginning of Spring, Summer, Autumn, and Winter.

Kamiyoshinichi — a day for kami worship

Traditionally associated with visiting shrines and honoring deities and ancestors.

How this site assigns the day

Thirty-three of the sixty stem-and-branch combinations are assigned.

Daimyōnichi — great brightness

Meaning a brightly illuminated day, traditionally considered favorable for various celebrations.

How this site assigns the day

Twenty-five of the sixty stem-and-branch combinations are assigned.

Ten’onnichi — heavenly blessing

Representing heaven’s blessings, traditionally favored for celebrations but not mourning rites.

How this site assigns the day

Kinoe-ne through tsuchinoe-tatsu; tsuchinoto-u through mizunoto-hitsuji; and tsuchinoto-tori through mizunoto-ushi.

Bosōnichi — maternal care

An auspicious day when heaven was believed to cherish people.

How this site assigns the day

Determined by combining the solar-term month and the day’s zodiac branch.

Getsutokunichi — virtue of the month

Representing the month’s virtue, traditionally favored for arranging or improving one’s home.

How this site assigns the day

Determined by combining the solar-term month and the day’s heavenly stem.

Kishukunichi — the Ghost mansion day

A day assigned to the Ghost lunar mansion, particularly favored for celebrating longevity and honor. Interpretations differ.

How this site assigns the day

The day’s twenty-eight-mansion assignment is Ghost. This is calculated separately from the twenty-seven-mansion system.

Hassen — the eight restricted days

Days when the stem and branch share an element and were thought to incline matters to one side. Eight days within a twelve-day period remain after four exceptions. Originally associated with avoiding warfare, later also acupuncture, moxibustion, and raising pillars.

How this site assigns the day

The twelve days from mizunoe-ne through mizunoto-i, excluding mizunoto-ushi, hinoe-tatsu, tsuchinoe-uma, and mizunoe-inu.

Hassen exception day

A day within the Hassen period traditionally exempt from its restrictions.

How this site assigns the day

Mizunoto-ushi, hinoe-tatsu, tsuchinoe-uma, and mizunoe-inu; distinguished from the eight restricted days.

Jippōgure — darkness in ten directions

A period whose name suggests darkness in all directions; traditionally considered a time when undertakings would not proceed well.

How this site assigns the day

Kinoe-saru through mizunoto-mi, with hinoe-inu and tsuchinoto-ushi shown separately as exception days.

Jippōgure exception day

Two days within Jippōgure when the elements do not conflict. Some almanacs do not distinguish exceptions.

How this site assigns the day

Hinoe-inu and tsuchinoto-ushi.

Ten’ichi Tenjō

A period when the deity Ten’ichi was believed to be in heaven, lifting directional restrictions.

How this site assigns the day

The sixteen days from mizunoto-mi through tsuchinoe-saru.

Ōzuchi — first earth-restriction period

The first part of Tsuchi, a custom of refraining from disturbing the soil.

How this site assigns the day

The seven days from kanoe-uma through hinoe-ne.

Earth-restriction exception day

The day between the greater and lesser earth-restriction periods, exempt from the earth taboo.

How this site assigns the day

Hinoto-ushi.

Kozuchi — second earth-restriction period

The latter part of Tsuchi, a custom of refraining from disturbing the soil.

How this site assigns the day

The seven days from tsuchinoe-tora through kinoe-saru.

Fujōjubi — non-accomplishment day

Its name suggests that nothing comes to fulfillment; beginnings were traditionally avoided. The name does not predict actual success or failure.

How this site assigns the day

Every eighth day from a starting point assigned to each lunar month, not solar-term month.

Sanrinbō

An almanac designation associated with avoiding house construction. Some accounts say older calendars wrote it as ‘three-wheel treasure’ and considered it favorable for building.

How this site assigns the day

Boar days in solar-term months 1, 4, 7, and 10; Tiger days in months 2, 5, 8, and 11; Horse days in months 3, 6, 9, and 12.

Shofuku — first hot-season marker

The first of the three Sanpuku markers associated with the height of summer heat.

How this site assigns the day

The third kanoe day counted from the day after the summer solstice.

Chūfuku — middle hot-season marker

The second Sanpuku marker, following Shofuku.

How this site assigns the day

The fourth kanoe day counted from the day after the summer solstice.

Mappuku — final hot-season marker

The final Sanpuku marker, following the Beginning of Autumn.

How this site assigns the day

The first kanoe day counted from the day after the Beginning of Autumn.

Rōjitsu

A day connected with year-end rites and offerings to ancestors.

How this site assigns the day

This site uses the second Dragon day counted from the day after Minor Cold.

Jushinichi — the black-marked day

Old almanacs considered it the most unfavorable day, advising restraint except for funerals. It was sometimes marked with a black dot.

How this site assigns the day

Determined by solar-term month and zodiac branch. Other concurrent annotations are retained rather than suppressed.

Jusshinichi — ten-death day

Traditionally ranked after Jushinichi as unfavorable, and avoided for activities including funerals.

How this site assigns the day

Rooster, Snake, or Ox days are assigned according to the solar-term month.

Gomonichi — five tombs

Connected with the five elements’ ‘tombs,’ traditionally associated with restraint in earth-related activities.

How this site assigns the day

Tsuchinoe-tatsu, hinoe-inu, mizunoe-tatsu, kinoto-ushi, and kanoto-hitsuji. No individual fortune is assessed from a person’s birth year.

Kikonichi

Traditionally associated with avoiding coming-of-age rites and lending money.

How this site assigns the day

Ox, Tiger, or Rat days are assigned according to the solar-term month.

Chiiminichi — blood taboo

A day when seeing blood was avoided; customs discouraged acupuncture, moxibustion, and hunting.

How this site assigns the day

Determined by the solar-term month and the day’s zodiac branch.

Jūnichi — repetition day

Good was thought to become better and harm worse through repetition. Weddings and funerals were avoided in this tradition.

How this site assigns the day

This site uses all Snake and Boar days.

Fukunichi — recurrence day

Similar to Jūnichi: actions were thought to recur or multiply, so good deeds were favored.

How this site assigns the day

Determined by solar-term month and heavenly stem.

Tenkanichi — heavenly fire

Construction was traditionally avoided because raising a roof frame or roofing was believed to invite fire.

How this site assigns the day

Rat, Rabbit, Horse, or Rooster days are assigned according to the solar-term month.

Jikanichi — earthly fire

Traditionally associated with avoiding foundations, raising pillars, digging wells, sowing, and funerals.

How this site assigns the day

The zodiac branch three positions after the solar-term month’s branch.

Taikanichi — great calamity

One of three traditionally unfavorable designations, with Rōjakunichi and Metsumonnichi. Old almanacs considered it unfavorable for all activities; originally it varied by birth year.

How this site assigns the day

Determined by solar-term month and zodiac branch. No birth-year assessment is performed.

Rōjakunichi — disorder

One of three traditionally unfavorable designations, with Taikanichi and Metsumonnichi. Old almanacs considered it unfavorable for all activities; originally it varied by birth year.

How this site assigns the day

The same assignment as Tenkanichi. No birth-year assessment is performed.

Metsumonnichi — household destruction

One of three traditionally unfavorable designations, with Taikanichi and Rōjakunichi. Old almanacs considered it unfavorable for all activities; originally it varied by birth year.

How this site assigns the day

Determined by solar-term month and zodiac branch. No birth-year assessment is performed.

Ōmōnichi

Associated with the custom of avoiding departure on distant journeys.

How this site assigns the day

Assigned by a specified day count for each month, counting the solar-term month’s first day as day one.

Kuenichi — meeting of taboos

A day when various taboos were believed to gather. Counting methods differ by historical period.

How this site assigns the day

Specified stem-and-branch days for each lunar month, using Royal Fortune’s table for the Jōkyō calendar onward and excluding parenthesized days.

Tokigejiki — timed food restriction

A custom of refraining from eating and other activities at a particular time. It does not designate the whole day.

How this site assigns the day

This method assigns it only in solar-term months 5–10. Traditional two-hour period names are accompanied by approximate modern clock times.

Saigejiki — annual food restriction

A light food-related taboo based on a belief that a star spirit descended to eat. It was said to be disregarded when coinciding with an auspicious day.

How this site assigns the day

Years change at the Beginning of Spring, with stem-and-branch days assigned according to that year’s zodiac branch.

Kinoe-ne — Wood Rat day

The first day in the sixty-day cycle, connected with observances such as keeping vigil for Daikokuten.

How this site assigns the day

Days whose stem-and-branch designation is kinoe-ne (甲子).

Kōshin — Metal Monkey day

Connected with Kōshin vigils, honoring deities and staying awake through the night.

How this site assigns the day

Days whose stem-and-branch designation is kanoe-saru (庚申).

Tsuchinoto-mi — Earth Snake day

A day recurring every sixty days and associated with Benzaiten devotion.

How this site assigns the day

Days whose stem-and-branch designation is tsuchinoto-mi (己巳).

Tiger day

A Tiger zodiac day, introduced in some traditions as Bishamonten’s observance day.

How this site assigns the day

Every twelve days. Observance traditions differ among shrines and temples.

Snake day

A Snake zodiac day, traditionally associated with Benzaiten’s observances.

How this site assigns the day

Every twelve days. Observance traditions differ among shrines and temples.

Doyō — seasonal transition

Transition periods in spring, summer, autumn, and winter. An earth-governing deity was believed to preside, and customs discouraged digging and other earthwork.

How this site assigns the day

From the published start of Doyō through the day before the next Beginning of Spring, Summer, Autumn, or Winter.

Doyō exception day

A day within Doyō traditionally exempt from its earthwork restrictions.

How this site assigns the day

Snake, Horse, and Rooster days in spring; Rabbit, Dragon, and Monkey in summer; Goat, Rooster, and Boar in autumn; Tiger, Rabbit, and Snake in winter.

Ox day during Doyō

An Ox day within Doyō. It occurs in all four seasons, not only summer.

How this site assigns the day

Both within Doyō and assigned the Ox zodiac branch.

Higan — equinoctial observance period

Seven days centered on the spring or autumn equinox, associated with Buddhist services and remembering ancestors.

How this site assigns the day

Seven days from the published beginning of Higan.

Sources and checked dates · 109

Original source titles are retained in Japanese.