KST to PHT
-1hKST
KSTSOURCEPHT
PHTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and PHT on the World Map
The map below highlights the KST (Korea Standard Time) and PHT (Philippine Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
PHT – Philippine Time
UTC+08:00Philippine Time (PHT, UTC+08:00) is the time zone for the Philippines, 8 hours ahead of UTC.
- •Philippine Time does not observe daylight saving, so UTC+08:00 is fixed all year.
- •PHT shares its offset with China, Hong Kong, Singapore and Malaysia.
- •Manila is one of the largest outsourcing hubs in the world.
- •The Philippines spans one time zone despite being an archipelago of over 7,600 islands.
KST vs PHT: Offsets, DST and Best Call Times
KST runs on Korea Standard Time (KST) at UTC+09:00. PHT runs on Philippine Time (PHT) at UTC+08:00. That puts KST 1 hour behind PHT — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in KST it is 8:00 AM in PHT. Midnight in KST is 11:00 PM in PHT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
KST to PHT time conversion table
| KST (KST) | PHT (PHT) | Day |
|---|---|---|
| 12:00 AM | 11:00 PM | previous day |
| 6:00 AM | 5:00 AM | same day |
| 7:00 AM | 6:00 AM | same day |
| 8:00 AM | 7:00 AM | same day |
| 9:00 AM | 8:00 AM | same day |
| 12:00 PM | 11:00 AM | same day |
| 3:00 PM | 2:00 PM | same day |
| 5:00 PM | 4:00 PM | same day |
| 6:00 PM | 5:00 PM | same day |
| 9:00 PM | 8:00 PM | same day |
Why people convert KST to PHT time
- Scheduling a call from KST to PHT: a 10:00 AM start in KST lands at 9:00 AM in PHT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both KST and PHT are inside the 9-to-5 working day between 10:00 AM and 5:00 PM KST time (9:00 AM–4:00 PM PHT). That is roughly 7 hours of usable overlap.
- Coordinating a KST-based team with PHT contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -1h gap is not.
- Block 10:00 AM–5:00 PM KST as the recurring meeting window if you work primarily from KST and need PHT colleagues present.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
About PHT (Philippine Time)
Philippine Time (PHT) is fixed at UTC+08:00 all year. The Philippines has not observed daylight saving time since 1978, apart from a brief trial in 1990. PHT shares its offset with China Standard Time, Hong Kong Time, Singapore Time, Malaysian Time and Australian Western Standard Time, which makes Manila a convenient bridge for scheduling across East and Southeast Asia. As one of the world's largest centres for business process outsourcing, Manila keeps overlapping hours with both Australia and, on early shifts, the United States, and its contact-centre schedules are usually planned around Manila local time.
Best time to call between KST and PHT
Both KST and PHT sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM KST, which is 9:00 AM–4:00 PM PHT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
KST and PHT share 7 hours of working-hours overlap (10:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
KST is 1 hour behind PHT (KST UTC+09:00 → PHT UTC+08:00). The shared working window is 10:00 AM–5:00 PM KST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between KST and PHT?
KST (KST, UTC+09:00) is 1 hour behind PHT (PHT, UTC+08:00). The gap is currently -1h.
How do I convert KST time to PHT time?
Add -1h to KST local time. For example, 9:00 AM in KST is 8:00 AM in PHT.
What time is it in PHT right now?
PHT uses PHT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from KST.
What is the best time to call PHT from KST?
Call between 10:00 AM and 5:00 PM KST — that maps to 9:00 AM–4:00 PM PHT and keeps both parties inside the working day.
Which is behind, KST or PHT?
KST is 1 hour behind PHT. When it is 12:00 PM in KST it is 11:00 AM in PHT.
Does daylight saving time affect the KST–PHT difference?
Neither zone observes daylight saving time, so the -1h offset between KST and PHT is fixed all year.
Which other cities share KST's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, KST's zone?
KST is used in South Korea, North Korea.
Is there a day difference between KST and PHT?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between KST and PHT?
PHT is -1h from KST.
What timezone is KST in?
KST operates on its local timezone.
What timezone is PHT in?
PHT operates on its local timezone.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the PHT timezone?
Major cities in the PHT timezone include Manila, Quezon City, Davao City, Cebu City, Zamboanga.
What is the UTC offset for PHT?
Philippine Time (PHT) is at UTC+08:00.
What should I know about the PHT timezone?
Philippine Time does not observe daylight saving, so UTC+08:00 is fixed all year. PHT shares its offset with China, Hong Kong, Singapore and Malaysia.
When is it midnight in KST, what time is it in PHT?
When it is 12:00 AM (midnight) in KST (KST), it is -1h later in PHT (PHT).
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