Japanese Weekdays: Everything You Need to Know

Japanese Weekdays: Everything You Need to Know - EDOPEN Japan

If you intend to travel to or work in Japan, you may have questions about the days of the week and business hours. This article will describe how to correctly pronounce the days of the week in Japanese and the functionality of the Japanese weekday system.

You’ll be pleasantly surprised by the similarities between English and Japanese on this topic. The Japanese week begins on Sunday and ends on Saturday, so it is important to keep it in mind while discussing any scheduled activities or plans. Most Japanese calendars follow this model. This guide presents an easy way to remember this information. Let’s get started!

In addition, if you are currently studying Japanese and wish to enhance your comprehension of specific topics, please peruse our extensive selection of reading materials tailored just for you below!

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The weekdays in Japanese

The weekdays in Japanese - EDOPEN Japan - EDOPEN Japan

The workweek usually consists of weekdays, excluding designated holidays such as Sundays, national holidays, transfer holidays, and extended holiday periods, among others, commonly observed by most companies. The workweek may or may not comprise Saturdays and other non-holiday weekdays.

In Japan, schools, businesses, and government agencies usually classify Monday through Friday as “weekdays,” except for national holidays, transfer holidays, year-end holidays, Golden Week, Obon Time, and other holidays.

Thus, if you work on weekends or holidays and take a day off during the week between Monday and Friday, it will still be considered a “weekday.”

Saturday was previously considered a weekday. Nonetheless, most schools, businesses, and government agencies began observing Saturdays and Sundays as holidays following the introduction of the two-day week system.

As a result, the number of schools, businesses, and government agencies closed on Saturdays has considerably increased.

Weekdays in company

The days of the week in Japan depend on the particular company, but usually, Monday through Friday are considered “weekdays”.

Public Institution“Monday-Friday” excluding public holidaysBasically, excluding holidays
Transportation“Monday-Friday” excluding public holidaysIn the schedule of transportation means such as railroads and busses, “Monday-Friday” is set as the weekday schedule.
Office“Monday-Friday” excluding Public holidaysIt depends on each company
HotelMainly “Monday-Thursday” is a weekdayPrices tend to be higher on Saturdays, Sundays, and the day before holidays. Sometimes, Friday isn’t a “weekday”
DictionaryBasically, “Monday-Saturday” is a weekday stand.Often called “days other than Sundays and holidays” it means “Saturday can be excluded.”

The business hours & holidays in Japan

The operating hours of banks, post offices, department stores, museums, parks, and other public facilities in Japan may diverge from those in your home country. These hours also fluctuate throughout the country.

Here’s a general rundown of some of the more ubiquitous businesses and services. Nevertheless, ensure to review the websites for the opening hours of the locations or facilities you plan to visit.

Weekdays SaturdaySunday & National Holiday
Bank 09:00-15:00    ClosedClosed
Post Office   09:00-17:00ClosedClosed
Department Store10:00-20:00 10:00-20:00 10:00-19:30
Museum 10:00-17:00  10:00-17:00  10:00-17:00  
Office 09:00-17:00ClosedClosed


The holidays in Japan

In addition to the standard national holidays, there are also extended vacation periods when the majority of the nation takes time off work to visit the beaches, mountains or spend time with family.

The last week of December through the first week of January, “Golden Week” (a few days in late April through May), and the “Obon Vacation” in mid-August are three of the main vacation periods. Numerous businesses shut down during the days surrounding New Year’s Day.

During Golden Week, there are numerous domestic and international tourists, while during the “Obon” holiday, many Japanese people travel to their families in more rural areas of the country. Traffic and resorts are especially crowded during these periods. Please refer to the list of Japanese Public Holidays provided below.

DateName of the Day
January 1stNew Year’s Holiday
2nd Monday of JanuaryComing-of-Age Day
February 11thNational Foundation Day
February 23rdThe Emperor’s Birthday
March 20th or March 21stVernal Equinox Day
April 29thShowa Day
May 3rdConstitution Memorial Day
May 4thGreenery Day
May 5thChildren Day
3rd Monday of July Marine Day
3rd Monday of SeptemberRespect for the Aged Day
September 22nd or September 23rdAutumnal Equinox Day
2nd Monday of OctoberHealth and Sports Day
November 3rdCulture Day
November 23rdLabor Thanksgiving Day

How to say the days of the week in Japanese?

How to say the days of the week in Japanese? - EDOPEN Japan

Please look at the following table to know how to say the days of the week in Japanese.


You may have noticed that all the names of the weekdays in Japanese comprise of three kanji, with the final two being always the same. Similar to English, the word for each day of the week includes the word ようび (曜日) which means “day” in English. The term ようび (曜日 – youbi / yōbi) originates from the Chinese character 曜日 and is consistently used with words denoting the days of the week.

The meaning behind the day-name in Japanese

The days of the week have their origins in the seven celestial bodies of the solar system, which were known in ancient times: the Sun, the Moon, and the planets Mars, Mercury, Jupiter, Venus, and Saturn. This model is utilized in American English as well.

Each day of the week is associated with its corresponding celestial body in both English and Japanese cultures. Refer to the table below to determine the significance of each day.


How to remember the days in Japanese?

How to remember the days in Japanese? - EDOPEN Japan

Learning new vocabulary from a list of words can be challenging even for the most talented language learners. To aid in remembering the days of the week, we have provided a brief explanation for each that reflects its corresponding Chinese philosophies of yin-yang and the 5 Taoist elements (Wood, Fire, Earth, Metal, and Water).

1. Monday (月曜日 – Getsuyoubi)

On Mondays in Japan, the name for the day is 月曜日 (getsuyōbi), which means “Moon Day” in English. The Chinese character 月 (getsu) represents a crescent moon and is also used formonths in Japanese. To help remember this, think of Monday as the important day that gets you started for the week!

2. Tuesday (火曜日 – Kayoubi)

Tuesday is known as “Fire Day” in English, because in Japanese it’s called 火曜日 (かようび / Kayoubi), which directly translates to “Fire Day.” To better understand this name, consider Monday your “warm-up day.”

By Tuesday, you should be fully warmed up and ready to tackle the week with enthusiasm. The Chinese character 火 (か / ka) depicts a burning fire with sparks, which reflects the essence of this day.

3. Wednesday (水曜日 – Suiyoubi)

Wednesday in Japanese is 水曜日 (Suiyoubi), which translates to “Water Day”. To recall this day, imagine extinguishing Tuesday’s fire with water on Wednesday. The Chinese character 水 (Sui) resembles flowing water, giving the day its significance as “water day”.

4. Thursday (木曜日 – Mokuyoubi)

Thursday is translated as “Wood Day” in Japanese, which can serve as a reminder of the weekend that seems so close but is yet to come. The Chinese character 木 (Moku) in the word 木曜日 (Mokuyoubi) resembles a tree and symbolizes wood.

5. Friday (金曜日 – Kinyoubi)

Friday is translated as “Gold Day” in Japanese. This day is easy to remember because it’s the golden day we all wait for each week! The philosophy behind the Chinese character 金 (kin) in 金曜日 (Kinyoubi) is that there is a metal hidden in the earth that shines once it’s discovered. This indicates gold or metal.

6. Saturday (土曜日 – Doyoubi)

In American English, Saturday is known as “Ground Day” in Japanese, as it is translated from the Japanese word for Saturday, 土曜日 (どようび / Doyoubi). This term contains the Chinese character 土 (ど / Do), which depicts a mound of earth that was worshipped as the origin of life in ancient times.

7. Sunday (日曜日 – Nichiyoubi)

In American English, Sunday in Japanese is 日曜日, which can be translated as “Sun Day”. You’ll find it easy to remember this day since it’s the same as Sunday in English. The Chinese character 日 (にち / Nichi) used in the word 日曜日 (にちようび / Nichiyoubi) means sun.

The history of the day in Japan

The history of the day in Japan - EODPEN Japan

The seven-day week system is believed to have originated in ancient Babylonia. However, each day of the week was established by ancient Rome. When Japan adopted the Western calendar, they adopted names for the seven days of the week, too.

These names were partly derived from the Latin system. The Romans named the days of the week after the seven planets of classical astronomy and numbered them in the order of Sunday first. The East Asian weekday naming system closely resembles the Latin system and is founded on the “Seven Luminaries” (七曜 shichiyō), which includes the Sun, Moon, and the five planets that are visible to the naked eye.

The planets in our solar system were named after the five elements of traditional East Asian philosophy: Fire (Mars), Water (Mercury), Wood (Jupiter), Metal (Venus), and Earth (Saturn). The Japanese monk Kobo Daishi brought the Chinese transliteration of the planetary system to Japan.

Diaries from the Heian Period of Fujiwara no Michinaga show that the seven-day system was in use during this time. It was utilized for astrological purposes until it was replaced with a Western-style calendar during the Meiji era.

The other related vocabularies about “weekdays” you need to know

The other related vocabularies about "weekdays" you need to know - EDOPEN Japan

There will be occasions when it is necessary to communicate time expressions such as “last week” or “next month”. To facilitate this, here is a list of essential vocabulary. Presented below are the fundamental terms.

The day after tomorrow明後日あさってAsatte
The day before yesterday一昨日おとといOtotoi
Everyday 毎日まいにちMainichi
This week今週こんしゅうKonshuu
Next week  来週らいしゅうRaishuu
Last week先週せんしゅうSenshuu
The weekend週末しゅうまつShuumatsu
Every week毎週まいしゅうMaishuu
A week ago1週間前いっしゅうかんまえIsshuukan-mae
3 weeks later3週間後さんしゅうかんごSanshuukan-go
This month今月こんげつKongetsu
Last month先月せんげつSengetsu
Next month来月らいげつRaigetsu
Every month毎月まいつきMaitsuki
Two months ago2か月前にかげつまえNikagetsu-mae
Three months later3か月後さんかげつごSankagetsu-go
This year今年ことしKotoshi
Last year去年きょねんKyonen
Next year来年らいねんRainen
The year before last一昨年おととしOtotoshi
The year after next再来年さらいねんSarainen
Every year毎年まいとしMaitoshi

There are some patterns here! Please look at the following example:

先 (Sen or Saki) means “Previous”
今 (Ima or Kon) means “Now” or “Current”
来 (Rai) means “Coming”
後 (Ato or Go) means “After”
前 (Mae) means “Before”


  • In Japan, most organization regards “Monday to Friday” as “Weekdays”, and Saturdays and Sundays as holidays.
  • Five planets are named after the five elements in the traditional East Asian philosophical system: Fire (Mars), Water (Mercury), Wood (Jupiter), Metal (Venus), and Earth (Saturn) were brought to Japan in the Heian period.
  • Every day of the week is related to the same celestial body in English and Japanese. Also, Each day of the week is named after a combination of Chinese philosophies of yin-yang, and the 5 Taoist elements (Wood, Fire, Earth, Metal, and Water).
  • It is better to know how to learn not only “days of the week” but also other phrases such as “This week” and “Next month” to expand your conversation vocabulary more.


Representative Director of Reboot Japan Co., Ltd., which operates EDOPEN JAPAN. Founded the company in 2018, which provides Japanese language education and assistance for studying in Japan. Started the company after living with international students at a Japanese language school. He enjoys learning about new people and cultures and has lived in Australia and Malaysia. Graduated from the Faculty of Economics, Sophia University.