Ansan runs on UTC+9 (KST) every day of the year, with no daylight saving time.
Ansan and your time
Ansan at a glance
| Country | South Korea |
|---|---|
| Region | Gyeonggi-do |
| Time zone | Asia/Seoul |
| Abbreviation now | KST |
| UTC offset now | UTC+9 |
| Daylight saving time | Not observed since 1988 |
| Coordinates | 37.32° N, 126.82° E |
Ansan time zone and clock changes
Local time in Ansan 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.
All of South Korea keeps the same time, so Ansan reads the same clock as Seoul.
Clock changes in Ansan, 2026 and 2027
No clock changes are scheduled in Ansan for 2026 or 2027.
Ansan time compared with major cities
When it is 9:00 AM in Ansan, 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 |
Ansan 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 Ansan
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Day length in Ansan runs from 9 hours 35 minutes at the December solstice to 14 hours 44 minutes at the June solstice. The latest sunset, at 7:57 PM, comes on June 28.
Daylight through the year in Ansan
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:37 AM | 6:44 PM | 12 h 7 min |
| June solstice | June 21 | 5:12 AM | 7:57 PM | 14 h 44 min |
| September equinox | September 23 | 6:21 AM | 6:29 PM | 12 h 8 min |
| December solstice | December 22 | 7:43 AM | 5:19 PM | 9 h 35 min |
Clock time and sun time in Ansan
Ansan lies close to the centre of its time zone, so the sun is highest at about 12:35 PM on standard time, close to clock noon.
Places close to Ansan
All the places listed below keep the same time as Ansan.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Anyang | 12 km (7 mi) | --:-- | Same time |
| Hwaseong | 13 km (8 mi) | --:-- | Same time |
| Incheon | 18 km (11 mi) | --:-- | Same time |
| Suwon | 19 km (12 mi) | --:-- | Same time |
| Osan | 29 km (18 mi) | --:-- | Same time |
| Seoul | 30 km (19 mi) | --:-- | Same time |
| Seongnam | 31 km (19 mi) | --:-- | Same time |
| Goyang | 37 km (23 mi) | --:-- | Same time |
More cities in South Korea
All time zones and cities in South Korea
Tools for time in Ansan
- Convert a time to or from Ansan: pick a date and time and see it in every city on your list.
- Add Ansan to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Ansan and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Ansan in?
Ansan uses the Asia/Seoul time zone, which is UTC+9 (KST) all year.
Does Ansan use daylight saving time?
Not any more. Ansan last changed its clocks for daylight saving time in 1988 and now stays on UTC+9 all year.
What is the time difference between Ansan and New York?
Ansan 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 Ansan does not.
Is Ansan on the same time as Seoul?
Yes. Ansan and Seoul both use UTC+9 right now.
How long is the longest day in Ansan?
About 14 hours 44 minutes, around the June solstice. The shortest day, around the December solstice, has about 9 hours 35 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.