Ulsan to Nosara: time difference
Nosara is 15 h behind Ulsan. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Ulsan 03:00 3:00 AM Nosara 12:00 12:00 PM You –:–
03:00 3:00 AM
Korean Standard Time · UTC+9
☀️ 06:32 · 🌙 17:46
12:00 12:00 PM
Central Standard Time · UTC-6
☀️ 05:32 · 🌙 17:25
·
−15 h
Nosara is 15 h behind Ulsan.
When you, Ulsan and Nosara are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇰🇷 Ulsan
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇨🇷 Nosara
9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇰🇷 Ulsan | 🇨🇷 Nosara |
|---|---|---|
| Local time | 03:00 | 12:00 |
| Local date | Sunday, October 18, 2026 | Saturday, October 17, 2026 |
| Time zone | Korean Standard Time | Central Standard Time |
| UTC offset | UTC+9 | UTC-6 |
| Offset from Ulsan | — | −15 h |
| IANA zone | Asia/Seoul | America/Costa Rica |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:32 | 05:32 |
| Sunset | 17:46 | 17:25 |
| Daylight | 11 h 14 min | 11 h 54 min |
| People on this clock | 1,129,827 | 4,912 |
Compare Ulsan with another city
More comparisons with Ulsan: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Ulsan and Nosara: common questions
How far behind Ulsan is Nosara?
Nosara is 15 hours behind Ulsan: UTC−6 against UTC+9.
What time is it in Nosara when it is 9:00 AM in Ulsan?
When it is 9:00 AM in Ulsan, it is 6:00 PM (the previous day) in Nosara.
What time is it in Nosara at the end of the working day in Ulsan?
The working day in Ulsan ends at 6:00 PM; in Nosara it is 3:00 AM at that moment.
Is there a time when both Ulsan and Nosara are at work?
No, the working days (9:00 AM–6:00 PM) do not overlap. When the day starts in Ulsan at 9:00 AM, it is 6:00 PM (the previous day) in Nosara; the day in Nosara starts at 12:00 AM (the next day) in Ulsan time.
Until what time in Ulsan is it still yesterday in Nosara?
Before 3:00 PM in Ulsan, the date in Nosara has not changed yet. From 9:00 AM in Nosara, it is already the next day in Ulsan.
Does the time gap between Ulsan and Nosara change during the year?
No, the clocks change neither in Ulsan nor in Nosara, so the gap is 15 hours all year round.
