Date & Time Expressions — I can use common date and time expressions to schedule and confirm plans (days, months, times).

Every language has evolved its own way of tracking time, and Korean is no exception. Modern Korean date and time expressions reflect centuries of cultural exchange, blending an indigenous counting tradition with a borrowed numbering system from classical Chinese. Understanding this history helps explain why Korean uses two separate number systems — a feature that can seem confusing at first but becomes second nature with practice.

The central question this lesson addresses is practical: How do you say specific days, months, and times in Korean so you can make and confirm plans? To answer that, you need to learn which number system goes where, how days of the week are named, and the sentence patterns that Korean speakers use to schedule meetups, classes, and events.

Before diving into vocabulary lists, it helps to grasp the structural rules that govern all Korean date and time expressions. These principles act like the operating system behind every scheduling conversation you will have in Korean. Once you internalize them, individual words snap into place naturally.

As you can see in the diagram, the sentence structure is remarkably consistent. Every scheduling sentence in Korean follows this same skeleton. The year, month, and date all use Sino-Korean numbers paired with their respective counter words (년, 월, 일). When you reach the clock time, you switch to native Korean numbers for the hour (시) but jump back to Sino-Korean for the minutes (분). This switch is the trickiest part for learners, so pay close attention to the lower boxes in the diagram.

Days of the Week (요일 / yoil)

The seven days of the week in Korean all end in 요일 (yoil), which literally means "day of the week." The prefix for each day comes from a celestial body or element — the same system used in Japanese and rooted in classical Chinese cosmology. You do not need to memorize the origins, but knowing the pattern helps: 월 (moon) → Monday, 화 (fire) → Tuesday, and so on.

Months of the Year (월 / wol)

Good news — Korean months are beautifully simple. You take the Sino-Korean number and add 월 (wol) after it. January is 1월 (일월 / irwol), February is 2월 (이월 / iwol), and so on up to 12월 (십이월 / sibiwol). There are no separate names to memorize like in English or French. However, watch out for slight pronunciation changes with June (유월, not 육월) and October (시월, not 십월).

Telling Clock Time (시 & 분)

Here is where the dual number system gets real. The hour uses native Korean numbers with the counter 시 (si), while the minutes use Sino-Korean numbers with the counter 분 (bun). So "3:30" becomes 세 시 삼십 분 (se si samship bun). Native Korean numbers 1–12 have shortened forms before counters: 하나 → 한, 둘 → 두, 셋 → 세, 넷 → 네. AM and PM are expressed as 오전 (ojeon / AM) and 오후 (ohu / PM), placed before the hour.

Beyond the raw numbers, Korean scheduling conversations rely on a set of frequently used time-related words and phrases. These let you say things like "today," "next week," "this Saturday," or "the day after tomorrow." Mastering this vocabulary transforms you from someone who can only read calendar dates into someone who can actually hold a planning conversation.

The real power of these words emerges when you combine them. Want to say "next Thursday evening"? Stack the modifiers: 다음 주 목요일 저녁. The principle is still big-to-small: next week → Thursday → evening. Adding 에 at the end (다음 주 목요일 저녁에) marks this entire chunk as a time phrase, and you follow it with whatever verb completes your plan.

Let's walk through a realistic scenario: You want to text your Korean friend and say, "Let's study together at the café next Saturday at 2:45 PM." We'll build the Korean sentence piece by piece.

Knowing vocabulary is only half the battle; you also need to know the sentence patterns that Korean speakers actually use to propose, confirm, and adjust plans. The table below presents the most practical patterns, organized by their conversational function.

The patterns you've learned so far use polite informal speech (해요체 / haeyoche), which is appropriate for friends, classmates, and most everyday situations. As you advance in Korean, you'll encounter more formal registers and more complex time constructions. The table below previews how basic scheduling skills scale up.

Don't worry about mastering all of these right now. The important thing is that the core structure you've learned — big-to-small order, dual number systems, the 에 particle, and verb-final placement — carries directly into these advanced forms. Constructions like ~부터 ~까지 (from … to …) and ~전에 / ~후에 (before / after) simply plug into the same sentence skeleton. Your foundation is solid; the upgrades are incremental.