Seoul to Olongapo: time difference
Olongapo is 1 h behind Seoul. Live clocks for both, the working hours they share, and how each one sits against your own time.
−1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Seoul 19:37 7:37 PM Olongapo 18:37 6:37 PM You –:–
19:37 7:37 PM
Korean Standard Time · UTC+9
☀️ 06:43 · 🌙 17:53
18:37 6:37 PM
Philippine Standard Time · UTC+8
☀️ 05:51 · 🌙 17:38
·
−1 h
Olongapo is 1 h behind Seoul.
When you, Seoul and Olongapo are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇰🇷 Seoul
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
🇵🇭 Olongapo
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 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇰🇷 Seoul | 🇵🇭 Olongapo |
|---|---|---|
| Local time | 19:37 | 18:37 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Korean Standard Time | Philippine Standard Time |
| UTC offset | UTC+9 | UTC+8 |
| Offset from Seoul | — | −1 h |
| IANA zone | Asia/Seoul | Asia/Manila |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:43 | 05:51 |
| Sunset | 17:53 | 17:38 |
| Daylight | 11 h 10 min | 11 h 47 min |
| People on this clock | 9,509,458 | 233,040 |
Compare Seoul with another city
More comparisons with Seoul: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Seoul and Olongapo: common questions
How many hours behind Seoul is Olongapo?
The clocks in Olongapo are 1 hour behind those in Seoul (UTC+8 and UTC+9).
What time is it in Olongapo at the start of the working day in Seoul?
The working day in Seoul starts at 9:00 AM; in Olongapo it is 8:00 AM at that moment.
What time is it in Olongapo when it is 6:00 PM in Seoul?
When it is 6:00 PM in Seoul, it is 5:00 PM in Olongapo.
When is a good time to call Olongapo from Seoul?
Between 10:00 AM and 6:00 PM in Seoul – that is 9:00 AM to 5:00 PM in Olongapo – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Seoul is it still yesterday in Olongapo?
Before 1:00 AM in Seoul, the date in Olongapo has not changed yet. From 11:00 PM in Olongapo, it is already the next day in Seoul.
Does the time gap between Seoul and Olongapo change during the year?
No, the clocks change neither in Seoul nor in Olongapo, so the gap is 1 hour all year round.
