Ulsan runs on UTC+9 (KST) every day of the year, with no daylight saving time.
Ulsan and your time
Ulsan at a glance
| Country | South Korea |
|---|---|
| Region | Ulsan |
| Time zone | Asia/Seoul |
| Abbreviation now | KST |
| UTC offset now | UTC+9 |
| Daylight saving time | Not observed since 1988 |
| Coordinates | 35.54° N, 129.31° E |
Which time zone Ulsan uses
Ulsan follows the Asia/Seoul time zone and stays on UTC+9 all year. Clocks here last changed for daylight saving time in 1988; the tz database lists no change after that.
Ulsan is on the same time as the rest of South Korea, including the capital, Seoul.
Clock changes in Ulsan, 2026 and 2027
No clock changes are scheduled in Ulsan for 2026 or 2027.
Time difference between Ulsan and other cities
Take 9:00 AM in Ulsan: 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 |
Ulsan 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.
Daylight in Ulsan
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Day length in Ulsan runs from 9 hours 45 minutes at the December solstice to 14 hours 34 minutes at the June solstice. The latest sunset, at 7:42 PM, comes on June 29.
Daylight through the year in Ulsan
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:27 AM | 6:34 PM | 12 h 7 min |
| June solstice | June 21 | 5:08 AM | 7:41 PM | 14 h 34 min |
| September equinox | September 23 | 6:11 AM | 6:19 PM | 12 h 8 min |
| December solstice | December 22 | 7:29 AM | 5:14 PM | 9 h 45 min |
When the sun is highest in Ulsan
Clock time and sun time line up fairly well in Ulsan: solar noon falls at about 12:25 PM on standard time.
Cities near Ulsan
Every city below shares Ulsan’s clock.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Yangsan | 33 km (21 mi) | --:-- | Same time |
| Gijang | 34 km (21 mi) | --:-- | Same time |
| Gyeongju | 35 km (22 mi) | --:-- | Same time |
| Gimhae | 52 km (32 mi) | --:-- | Same time |
| Pohang | 55 km (34 mi) | --:-- | Same time |
| Busan | 55 km (34 mi) | --:-- | Same time |
| Changwon | 67 km (42 mi) | --:-- | Same time |
| Daegu | 74 km (46 mi) | --:-- | Same time |
More cities in South Korea
All time zones and cities in South Korea
Tools for time in Ulsan
- Convert a time to or from Ulsan: pick a date and time and see it in every city on your list.
- Add Ulsan to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Ulsan and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Ulsan in?
Ulsan uses the Asia/Seoul time zone, which is UTC+9 (KST) all year.
Does Ulsan use daylight saving time?
Not any more. Ulsan last changed its clocks for daylight saving time in 1988 and now stays on UTC+9 all year.
What is the time difference between Ulsan and New York?
Ulsan 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 Ulsan does not.
Is Ulsan on the same time as Seoul?
Yes. Ulsan and Seoul both use UTC+9 right now.
How long is the longest day in Ulsan?
About 14 hours 34 minutes, around the June solstice. The shortest day, around the December solstice, has about 9 hours 45 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.