Days, Months & Calendar

By the end of this lesson you can:

• Name all 7 days of the week (with their celestial meanings) and all 12 months, including the two contractions 유월 and 시월
• Use 15 calendar time words and the three time-reference ladders (그저께→모레 · 지난 주→다음 주 · 작년→내년) to talk about your schedule
• Say and understand complete dates in the Korean order: [year]년 [month]월 [day]일 [weekday]요일

TOPIK 1 skills: Dates, days & time words

15 words that anchor you in time: the days of the week, all 12 months, and the calendar vocabulary you’ll use every single day.

Lesson objectives

1. Learn all 7 days of the week and the pattern behind their names
2. Know all 12 months using Sino-Korean number roots from Lesson 14
3. Master 8 key calendar time words: 오늘 · 어제 · 내일 · 모레 · 이번 주 · 다음 주 · 주말 · 평일
4. Build complete date expressions: year · month · day + day of week
5. Say and understand dates, appointment times, and weekly schedules in Korean

RECALL: Using Lesson 14’s numbers directly. Months in Korean are almost completely regular: January is literally “one-month” (일월), February is “two-month” (이월), all the way to December “twelve-month” (십이월); only two months contract their spelling (유월, 시월, see Part 2). If you know your Sino-Korean numbers 1–12, you already know the months. Today’s lesson is about connecting that knowledge to the calendar and adding the time words around it.

Part 1 · 요일: Days of the Week

Seven days, each one named after a celestial body. Korean days of the week are based on the ancient East Asian system of five elements plus the Sun and Moon. Each day name ends in 요일 (yo-il), meaning “day of the week”. Learn the 7 stems: 요일 just attaches to all of them.

The celestial logic: 월 (月 moon) · 화 (火 fire/Mars) · 수 (水 water/Mercury) · 목 (木 wood/Jupiter) · 금 (金 metal/Venus) · 토 (土 earth/Saturn) · 일 (日 sun)

These are the same characters used in Chinese and Japanese weekday names. The system is shared across East Asia. You’ll recognise the pattern if you ever study Japanese (月曜日 = Getsuyōbi = Monday).

TIP: 금요일 = Friday = payday in Korea. 금 means gold/metal, so 금요일 (Friday) is literally “Gold Day”. This makes it very easy to remember. 토요일 (Saturday) and 일요일 (Sunday) make up the 주말 (weekend). 월요일 through 금요일 are the 평일 (weekdays). Two vocabulary words from Part 3 connect directly to this.

Part 2 · 월: The 12 Months

Sino-Korean number + 월 (月) = month name. Every month is formed by placing its Sino-Korean number in front of 월 (wol, meaning “month” / “moon”). 1월 through 12월 form an almost completely regular system: just two months contract their spelling (noted below).

Two irregular contractions to know:

• 6월 → 유월 (not 육월): 육 + 월 blends to 유월 in natural speech. Written as 6월, pronounced 유월.
• 10월 → 시월 (not 십월): 십 + 월 contracts to 시월. Written as 10월, pronounced 시월.

All other months are perfectly regular. Just these two need special attention.

Part 3 · 단어: 15 Calendar Vocabulary Words

오늘의 단어: Time words for the calendar. Today’s 15 words cover the time-relative vocabulary you need to talk about when things happen.

MILESTONE: 90 total words in your active deck. You’re past the first vocabulary milestone: enough language to talk about time, schedule meetings, state dates, and describe your week. The language is mapping onto real life.

Part 4 · 날짜 말하기: Saying Dates

The full date formula: year, month, day, weekday. Korean date structure runs from largest to smallest:

[year]년 [month]월 [day]일 [weekday]요일

The 3-point time reference system. Korean has a tidy three-point system for both days and weeks. Learn these words together. They form a logical set.

Part 5 · 달력: Calendar in Context

어제, 오늘, 내일: visualised. A snapshot of a week. The three key days are highlighted: say each word aloud before reading the label.

삼월: March (sam-wol · 3월)

• 어제 (eo-je): yesterday · 수요일
• 오늘 (o-neul): today · 목요일
• 내일 (nae-il): tomorrow · 금요일

TIP: 에: the time particle. To say “on” a day or “in” a month, attach 에 (e) to the time word: 월요일에 (on Monday) · 삼월에 (in March). One quirk: 오늘, 어제, and 내일 are normally used without 에: 내일 봬요, not 내일에 봬요. This particle appears in the grammar lessons coming up. For now, just notice it in examples.

CULTURE: 한글날 · Chuseok · 설날: Korea’s Calendar Anchors. Korea’s national holidays give the calendar its emotional texture. 설날 (Seollal, Lunar New Year) falls on 음력 1월 1일, the first day of the lunar calendar’s first month, usually in late January or February. Families travel home across the country; it’s Korea’s busiest travel period. 추석 (Chuseok, Harvest Festival) falls on 음력 8월 15일, the 15th day of the 8th lunar month, roughly equivalent to a harvest thanksgiving. Both holidays use the 음력 (lunar calendar), which runs alongside the standard 양력 (solar/Gregorian calendar) in Korean life.

한글날 (Hangeul Day) is 10월 9일 (October 9th), commemorating the promulgation of the Korean alphabet under King Sejong in 1446. It’s a public holiday. If you’re studying this course, 한글날 is your day. 축하해요!

Homework

Before Lesson 18…

1. Write all 7 days of the week from memory with their celestial meanings: 월 (Moon) · 화 (Fire) · 수 (Water) · 목 (Wood) · 금 (Metal) · 토 (Earth) · 일 (Sun). Then write all 12 months: number + 월. Remember 유월 and 시월.
2. Say today’s full date in Korean: [month]월 [day]일 [weekday]요일. Then say yesterday’s date and tomorrow’s date the same way. Do this every morning: it costs 20 seconds and locks in the calendar vocabulary completely over time.
3. Write the three time-reference ladders from memory: 그저께 → 어제 → 오늘 → 내일 → 모레 · 지난 주 → 이번 주 → 다음 주 · 작년 → 올해 → 내년.
4. Add today’s 15 words to your flashcard deck. The ones most likely to appear in TOPIK 1 reading passages: 오늘, 내일, 어제, 주말, 평일, 매일, 생일. Prioritise those seven.
5. Lesson 18 preview: Your first proper grammar lesson, the topic particle 은/는 and the copula 이에요/예요 (is/am/are). You’ve been seeing these in example sentences since L12. L18 explains exactly how they work and why. The sentence pattern 저는 학생이에요 will finally make complete sense as a grammatical structure.