Daejeon runs on UTC+9 (KST) every day of the year, with no daylight saving time.
Daejeon and your time
Daejeon at a glance
| Country | South Korea |
|---|---|
| Region | Daejeon |
| Time zone | Asia/Seoul |
| Abbreviation now | KST |
| UTC offset now | UTC+9 |
| Daylight saving time | Not observed since 1988 |
| Coordinates | 36.35° N, 127.38° E |
Which time zone Daejeon uses
Local time in Daejeon 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.
Daejeon is on the same time as the rest of South Korea, including the capital, Seoul.
Clock changes in Daejeon, 2026 and 2027
No clock changes are scheduled in Daejeon for 2026 or 2027.
How far ahead or behind Daejeon is
When it is 9:00 AM in Daejeon, it is 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 |
Daejeon 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 is the part of a 9 AM to 5 PM local working day that both cities have in common. Weekends are not taken into account.
Sunrise and sunset in Daejeon
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Over the year, daylight in Daejeon grows from 9 hours 41 minutes to 14 hours 39 minutes and back, a swing of 4 hours 58 minutes.
Daylight through the year in Daejeon
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:35 AM | 6:42 PM | 12 h 7 min |
| June solstice | June 21 | 5:13 AM | 7:51 PM | 14 h 39 min |
| September equinox | September 23 | 6:19 AM | 6:27 PM | 12 h 8 min |
| December solstice | December 22 | 7:38 AM | 5:19 PM | 9 h 41 min |
When the sun is highest in Daejeon
Daejeon 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 Daejeon
Every city below shares Daejeon’s clock.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Sejong | 28 km (18 mi) | --:-- | Same time |
| Cheongju | 33 km (21 mi) | --:-- | Same time |
| Cheonan | 55 km (34 mi) | --:-- | Same time |
| Iksan | 59 km (37 mi) | --:-- | Same time |
| Jeonju | 62 km (39 mi) | --:-- | Same time |
| Sangju | 70 km (43 mi) | --:-- | Same time |
| Gimcheon | 71 km (44 mi) | --:-- | Same time |
| Gunsan | 73 km (45 mi) | --:-- | Same time |
More cities in South Korea
All time zones and cities in South Korea
Tools for time in Daejeon
- Convert a time to or from Daejeon: pick a date and time and see it in every city on your list.
- Add Daejeon to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Daejeon and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Daejeon in?
Daejeon uses the Asia/Seoul time zone, which is UTC+9 (KST) all year.
Does Daejeon use daylight saving time?
Not any more. Daejeon last changed its clocks for daylight saving time in 1988 and now stays on UTC+9 all year.
What is the time difference between Daejeon and New York?
Daejeon 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 Daejeon does not.
Is Daejeon on the same time as Seoul?
Yes. Daejeon and Seoul both use UTC+9 right now.
How long is the longest day in Daejeon?
About 14 hours 39 minutes, around the June solstice. The shortest day, around the December solstice, has about 9 hours 41 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.