Cheongju runs on UTC+9 (KST) every day of the year, with no daylight saving time.
Cheongju and your time
Cheongju at a glance
| Country | South Korea |
|---|---|
| Region | North Chungcheong |
| Time zone | Asia/Seoul |
| Abbreviation now | KST |
| UTC offset now | UTC+9 |
| Daylight saving time | Not observed since 1988 |
| Coordinates | 36.64° N, 127.49° E |
Which time zone Cheongju uses
Local time in Cheongju is UTC+9 year round, under the Asia/Seoul rules. Daylight saving time was used in the past, most recently in 1988, and no future change is scheduled.
Cheongju is on the same time as the rest of South Korea, including the capital, Seoul.
Clock changes in Cheongju, 2026 and 2027
No clock changes are scheduled in Cheongju for 2026 or 2027.
Cheongju time compared with major cities
Take 9:00 AM in Cheongju: the clock reads 7:00 PM (previous day) in New York, 11:00 AM in Sydney and 4:00 PM (previous day) in Los Angeles.
| City | Time now | Difference now | In January | In July | Shared office hours |
|---|---|---|---|---|---|
| New York (United States) | --:-- | 14 h behind | 14 h behind | 13 h behind | None |
| Los Angeles (United States) | --:-- | 17 h behind | 17 h behind | 16 h behind | None |
| London (United Kingdom) | --:-- | 9 h behind | 9 h behind | 8 h behind | None |
| Paris (France) | --:-- | 8 h behind | 8 h behind | 7 h behind | None |
| Dubai (United Arab Emirates) | --:-- | 5 h behind | 5 h behind | 5 h behind | 3 h |
| Mumbai (India) | --:-- | 3 h 30 min behind | 3 h 30 min behind | 3 h 30 min behind | 4 h 30 min |
| Singapore | --:-- | 1 h behind | 1 h behind | 1 h behind | 7 h |
| Tokyo (Japan) | --:-- | Same time | Same time | Same time | 8 h |
| Sydney (Australia) | --:-- | 2 h ahead | 2 h ahead | 1 h ahead | 6 h |
| UTC | --:-- | 9 h behind | 9 h behind | 9 h behind | None |
Cheongju never changes its clocks, but many of these cities do. Where the January and July columns disagree, the gap shifts when the other city moves to or from daylight saving time.
Shared office hours counts the time when the clock reads between 9 AM and 5 PM in both cities on the same day.
Sunrise, sunset and day length in Cheongju
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
The earliest sunrise in Cheongju is at 5:11 AM on June 13, and the latest sunset at 7:53 PM on June 28.
Daylight through the year in Cheongju
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:34 AM | 6:41 PM | 12 h 7 min |
| June solstice | June 21 | 5:12 AM | 7:52 PM | 14 h 40 min |
| September equinox | September 23 | 6:18 AM | 6:26 PM | 12 h 8 min |
| December solstice | December 22 | 7:39 AM | 5:18 PM | 9 h 39 min |
When the sun is highest in Cheongju
Cheongju lies close to the centre of its time zone, so the sun is highest at about 12:30 PM on standard time, close to clock noon.
Places close to Cheongju
Every city below shares Cheongju’s clock.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Sejong | 18 km (11 mi) | --:-- | Same time |
| Daejeon | 33 km (21 mi) | --:-- | Same time |
| Cheonan | 35 km (22 mi) | --:-- | Same time |
| Pyeongtaek | 53 km (33 mi) | --:-- | Same time |
| Chungju | 54 km (34 mi) | --:-- | Same time |
| Sangju | 65 km (40 mi) | --:-- | Same time |
| Osan | 68 km (42 mi) | --:-- | Same time |
| Icheon | 72 km (44 mi) | --:-- | Same time |
More cities in South Korea
All time zones and cities in South Korea
Tools for time in Cheongju
- Convert a time to or from Cheongju: pick a date and time and see it in every city on your list.
- Add Cheongju to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Cheongju and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Cheongju in?
Cheongju uses the Asia/Seoul time zone, which is UTC+9 (KST) all year.
Does Cheongju use daylight saving time?
Not any more. Cheongju last changed its clocks for daylight saving time in 1988 and now stays on UTC+9 all year.
What is the time difference between Cheongju and New York?
Cheongju is 14 hours ahead of New York in January and 13 hours ahead of New York in July, because New York moves its clocks for daylight saving time and Cheongju does not.
Is Cheongju on the same time as Seoul?
Yes. Cheongju and Seoul both use UTC+9 right now.
How long is the longest day in Cheongju?
About 14 hours 40 minutes, around the June solstice. The shortest day, around the December solstice, has about 9 hours 39 minutes of daylight.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.