Saying the date and time in Korean trips up every learner, because it mixes both number systems. Pick a date and a time and I'll write it out the Korean way — in Hangul, with romanization.
—
Dates use Sino-Korean numbers (year 년, month 월, day 일). Watch two sneaky months: June is 유월 and October is 시월, not the regular forms. Clock hours use native Korean (한 시, 두 시…) while minutes use Sino-Korean (분).
I share the resources and breakthroughs from my own study. Want them in your inbox?
Dates and times were one of the first "real life" things I wanted to say in Korean, because they come up constantly — appointments, plans, telling someone what day it is. The tricky bit is that Korean uses two different number systems, and dates and times don't both use the same one. Once you see how the pieces fit, though, it becomes a pattern you can lean on. This builder is here to drill that pattern until it feels natural.
For dates, Korean uses the Sino-Korean number system (the il, i, sam, sa set). The order goes big to small — year, then month, then day:
So a date like "March 5th" is 삼월 오일 (sam-wol o-il): the 3rd month, the 5th day. A full date stacks them in order, year first. The nice thing is there's no separate words to memorize for "March" or "Tuesday the 5th" — you just count the month and the day with Sino-Korean numbers and tack on the right marker.
Here's the little curveball that tripped me up, so let me flag it early. Most months are simply the number plus 월 — 일월 (January), 이월 (February), and so on. But two months drop a sound to make them easier to say:
These two are irregular and you just have to memorize them. Everything else follows the plain number-plus-월 rule. Honestly, once you know June and October are the oddballs, the rest of the calendar falls right into place.
The days of the week all end in 요일 (yoil), with a different character in front tied to a natural element. You'll see 월요일 (Monday, "moon day"), 화요일 (Tuesday, "fire"), 수요일 (Wednesday, "water"), 목요일 (Thursday, "wood"), 금요일 (Friday, "gold/metal"), 토요일 (Saturday, "earth"), and 일요일 (Sunday, "sun"). Grouping them by that shared 요일 ending made them way easier for me to remember than trying to learn seven unrelated words.
Time is where Korean really makes you juggle both number systems in a single sentence, and this is the part that still makes me pause sometimes. The rule is:
So "3:30" is 세 시 삼십 분 — native number for the hour, Sino number for the minutes, all in one breath. For morning and afternoon, you put 오전 (ojeon, AM) or 오후 (ohu, PM) at the front: 오후 세 시 is "3 PM." It feels like a lot at first, but it's really just "native hour, Sino minute" on repeat. If you want more bite-sized practice like this, peek at my other free tools.
It comes down to history. Korean has a native counting system (used for hours, ages, and counting objects) and the Sino-Korean system borrowed from Chinese (used for minutes, dates, money, and large numbers). Hours stuck with the older native numbers, while minutes and dates adopted Sino-Korean. There's no shortcut around it — but the pattern is consistent, so once "native for hours, Sino for minutes" sinks in, you can build almost any time correctly without overthinking it.
I share new recipes, faith notes, and what I'm learning lately. Pop your email in and I'll send them your way — no spam, ever.