Nosara to Ulsan: time difference
Ulsan is 15 h ahead of Nosara. 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.
Nosara 12:47 12:47 PM Ulsan 03:47 3:47 AM You –:–
12:47 12:47 PM
Central Standard Time · UTC-6
☀️ 05:32 · 🌙 17:25
03:47 3:47 AM
Korean Standard Time · UTC+9
☀️ 06:32 · 🌙 17:46
·
+15 h
Ulsan is 15 h ahead of Nosara.
When you, Nosara and Ulsan are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇷 Nosara
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
🇰🇷 Ulsan
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 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇷 Nosara | 🇰🇷 Ulsan |
|---|---|---|
| Local time | 12:47 | 03:47 |
| Local date | Saturday, October 17, 2026 | Sunday, October 18, 2026 |
| Time zone | Central Standard Time | Korean Standard Time |
| UTC offset | UTC-6 | UTC+9 |
| Offset from Nosara | — | +15 h |
| IANA zone | America/Costa Rica | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:32 | 06:32 |
| Sunset | 17:25 | 17:46 |
| Daylight | 11 h 54 min | 11 h 14 min |
| People on this clock | 4,912 | 1,129,827 |
Compare Nosara with another city
More comparisons with Nosara: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Nosara and Ulsan: common questions
How many hours ahead of Nosara is Ulsan?
The clocks in Ulsan are 15 hours ahead of those in Nosara (UTC+9 and UTC−6).
What time is it in Ulsan at the start of the working day in Nosara?
The working day in Nosara starts at 9:00 AM; in Ulsan it is 12:00 AM (the next day) at that moment.
What time is it in Ulsan when it is 6:00 PM in Nosara?
When it is 6:00 PM in Nosara, it is 9:00 AM (the next day) in Ulsan.
Is there a time when both Nosara and Ulsan are at work?
No, the working days (9:00 AM–6:00 PM) do not overlap. When the day starts in Nosara at 9:00 AM, it is 12:00 AM (the next day) in Ulsan; the day in Ulsan starts at 6:00 PM (the previous day) in Nosara time.
From what time in Nosara is it tomorrow in Ulsan?
Once it is 9:00 AM in Nosara, the date in Ulsan has already changed. Until 3:00 PM in Ulsan, it is still the previous day in Nosara.
Does the time gap between Nosara and Ulsan change during the year?
No, the clocks change neither in Nosara nor in Ulsan, so the gap is 15 hours all year round.
