Dates & Days of the Week
Learn to read and say dates, months, and days of the week in Korean.
Korean dates and days of the week follow the Sino-Korean number system with specific counter words. Months are 1월 (January), 2월 (February) etc., read as 일월, 이월. Days of the month are 1일, 2일 etc., read as 일일, 이일. Days of the week use specific names: 월요일 (Monday), 화요일 (Tuesday), 수요일 (Wednesday), 목요일 (Thursday), 금요일 (Friday), 토요일 (Saturday), 일요일 (Sunday).
The day-of-the-week names come from classical Chinese cosmology (moon, fire, water, wood, gold, earth, sun), which is identical to the Japanese system (月・火・水・木・金・土・日). Japanese speakers can recognise the pattern immediately. Full date format follows year > month > day, the same as Japanese: 2026년 5월 24일. Be ready to read and write dates in this format; it differs from English's month-day-year or day-month-year conventions.
Days of the Week — All 7 Days
The 7 days use 월화수목금토일 + 요일: 월요일(Mon), 화요일(Tue), 수요일(Wed), 목요일(Thu), 금요일(Fri), 토요일(Sat), 일요일(Sun). Use 에 to mean 'on [day]'. For 'every [day]' use 마다: 월요일마다(every Monday).
Dates: 년/월/일 and Relative Time
Format: [year]년 [month]월 [day]일. All use sino-Korean numbers. Relative time: 그저께(day before yesterday), 어제(yesterday), 오늘(today), 내일(tomorrow), 모레(day after tomorrow). Weeks: 이번 주(this week), 지난주(last week), 다음 주(next week).
How It Works
Days of the week are built on a transparent system. Five of the seven names come from the classical elements and the other two from the sun and moon, each followed by 요일: 월(moon)요일, 화(fire)요일, 수(water)요일, 목(wood)요일, 금(metal)요일, 토(earth)요일, 일(sun)요일. Japanese speakers will recognise this immediately because Japanese uses exactly the same set — 月火水木金土日 — in exactly the same order.
Dates run largest to smallest, the reverse of English: [year]년 [month]월 [day]일. 2026년 2월 24일. All three use Sino-Korean numbers without exception, so once you know the Sino-Korean numerals, you can read any date.
에 marks 'on' a day: 토요일에 만나요. 마다 means 'every': 월요일마다 한국어를 공부해요. The two do different jobs and can be swapped to change meaning without changing anything else in the sentence.
Relative time words form a neat five-point scale around today: 그저께, 어제, 오늘, 내일, 모레. These take no particle. Week expressions use 이번 주, 지난주, 다음 주, and note the inconsistent spacing — 지난주 is written solid while 다음 주 is spaced, a detail that trips learners writing rather than speaking.
Where You'll Hear It
Scheduling is the obvious application, and the pattern is highly formulaic. 금요일에 시간 있어요? ('are you free on Friday?') and 토요일에 뭐 할 거예요? combine the day, the particle and the future form from Lesson 3-7 into sentences you will use weekly.
주말 ('weekend') is one of the highest-frequency words in casual Korean conversation, since 주말에 뭐 했어요? and 주말 잘 보내세요 ('have a good weekend') are both standard small talk. The latter is said routinely on Friday afternoons in offices and shops.
마다 handles routine, which is useful when describing your own habits: 주말마다 운동해요, 월요일마다 회의가 있어요. It is a compact way to express regularity that would need several words in English.
생일 conversations arrive early because Koreans often ask about birthdays when establishing age, which as you saw in the titles lesson determines how people address each other. Being able to state your birthday in 년월일 order, with Sino-Korean numbers throughout, is therefore more socially useful than it might first appear.
Cultural & Language Note
Korean weekday names come from the same Sino-Japanese set as Japanese ones — 월요일 and 月曜日 share both the character and the logic of moon, fire, water, wood, gold, earth, sun. A Japanese speaker who knows the kanji can essentially read the Korean week without studying it. This is one of the clearest illustrations of how much shared vocabulary the two languages carry.
Common Mistakes to Avoid
Dates are read with Sino-Korean numbers throughout — 시월 이십오 일, not native numbers. Note the irregular month names: June is 유월 and October is 시월, dropping a consonant from the expected 육월 and 십월. Learners who apply the pattern mechanically produce forms Koreans never say.
How to Practice This Lesson
Japanese speakers should claim the free win here. The seven day names map one-to-one onto Japanese, so spend ten minutes confirming the correspondence and then move on rather than drilling them as new vocabulary.
Put the effort into dates instead, because reading 2026년 2월 24일 fluently requires the Sino-Korean numerals to be automatic. Write out ten dates that actually matter to you — birthdays, deadlines, trips — and read each aloud until you stop calculating.
Then build a weekly schedule in Korean and say it every morning. 월요일에 회의가 있어요, 수요일에 한국어 수업이 있어요. Using your real week means the day names attach to real events, and the 에 particle gets practised in the only context where you will actually need it.