Calendar

These tools help you look up the Japanese calendar and the customs around it. They cover the list of public holidays and a holiday checker, rokuyo days such as taian and butsumetsu, conversion between the Gregorian calendar and Japanese eras, every era from Taika to Reiwa, a historical period reference, and the zodiac table — plus name divination by stroke count, Edo-period clock times, and the seasonal greetings used month by month.

Japan Holiday Calendar — Is This Date a Holiday? Plus Streak Ranking

Instantly check whether any date in :year — including New Year's Eve or other notable days — is a Japanese public holiday, including substitute and citizens' holidays — plus the longest holiday streaks and the story behi...

Holiday Checker (Is This Day a Holiday?)

Select a single date to instantly check whether it is a Japanese public holiday or substitute holiday. The day of the week is also shown at the same time.

Rokuyou Calendar (Auspicious & Inauspicious Days at a Glance)

A free calendar showing the Rokuyou (先勝・友引・先負・仏滅・大安・赤口) for each day of :year. Auspicious (Taian) and inauspicious (Butsumetsu) days are color-coded, making it easy to plan weddings and events.

When Did Japanese Eras Change? CE / Era Quick-Reference Chart & Age by Birth Year

Find out exactly when Japanese eras changed (such as Heisei to Reiwa) and instantly convert between CE years and Japanese era names (Reiwa, Heisei, Showa, Taisho, Meiji). It also calculates your current age from your bir...

Japanese Era Names (Gengō) — Full List, Taika to Reiwa

An easy-to-read, complete list of all 247 Japanese era names (nengō/gengō) from Taika (645 CE) to Reiwa, one row per year — including the longest era, Shōwa (62 years). Covers Northern and Southern Court eras of the Nanb...

Japanese Era & Zodiac Lookup

Enter a Gregorian year, or how many years ago, to instantly find the matching Japanese era name, Japanese calendar year, zodiac sign, and historical period.

Chinese Zodiac (Eto) Lookup

Enter a birth year to instantly find its Chinese zodiac animal — Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog or Boar. Handy for New Year cards or age-guessing quizzes.

Free Japanese Name Numerology (Seimei Handan)｜Five Grids by Kanji Stroke Count

Enter a Japanese surname and given name to automatically calculate the Five Grids (Heaven, Personality, Earth, Outer, and Total) from kanji stroke counts, based on the widely used Kumazaki method. Free tool with a 1-81 f...

Edo-Era Japanese Time Converter — Zodiac Hours & Bells

Convert modern time free into Edo-period Japanese zodiac hours, including the Hour of the Rat, the third quarter of the Ox, and noon as nine bells. Includes a reverse lookup table.

Japanese Seasonal Letter Greetings by Month

A month-by-month list of "jikō no aisatsu" — the formal seasonal greeting phrases used to open Japanese letters and business emails, from January's "genkan no kō" to December's "shotō no kō".