KST to TRT
-6hKST
KSTSOURCETRT
TRTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and TRT on the World Map
The map below highlights the KST (Korea Standard Time) and TRT (Turkey 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).
TRT – Turkey Time
UTC+03:00Turkey Time (TRT, UTC+03:00) is the single time zone used across Turkey, fixed year round since 2016.
- •Turkey has used a permanent UTC+03:00 since September 2016.
- •TRT is level with Moscow Standard Time and Arabia Standard Time all year.
- •Because Turkey kept summer time permanently, western cities see very late winter sunrises.
- •Turkey previously observed daylight saving time from 1973 to 2016.
Time Conversion Guide: KST to TRT
KST runs on Korea Standard Time (KST) at UTC+09:00. TRT runs on Turkey Time (TRT) at UTC+03:00. That puts KST 6 hours behind TRT — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in KST it is 3:00 AM in TRT. Midnight in KST is 6:00 PM in TRT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
KST to TRT time conversion table
| KST (KST) | TRT (TRT) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert KST to TRT time
- Scheduling a call from KST to TRT: a 10:00 AM start in KST lands at 4:00 AM in TRT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both KST and TRT are inside the 9-to-5 working day between 3:00 PM and 5:00 PM KST time (9:00 AM–11:00 AM TRT). That is roughly 2 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in KST is 2:00 PM in TRT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM KST as the recurring meeting window if you work primarily from KST and need TRT 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 TRT (Turkey Time)
Turkey Time (TRT) is fixed at UTC+03:00 all year. Turkey abolished seasonal clock changes in September 2016, moving to a permanent UTC+03:00 so the whole country stays on what was formerly summer time. That leaves Istanbul, which sits close to 29°E, on an offset well ahead of its solar time — sunrise in mid-winter comes after 08:30 local. TRT shares its offset with Moscow Standard Time, Arabia Standard Time and East Africa Time, so Istanbul is level with Moscow and Riyadh all year and one hour ahead of Central European Time during the European winter.
Best time to call between KST and TRT
Both KST and TRT sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM KST, which is 9:00 AM–11:00 AM TRT. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
KST and TRT overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
KST is 6 hours behind TRT (KST UTC+09:00 → TRT UTC+03:00). The shared working window is 3:00 PM–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 TRT?
KST (KST, UTC+09:00) is 6 hours behind TRT (TRT, UTC+03:00). The gap is currently -6h.
How do I convert KST time to TRT time?
Add -6h to KST local time. For example, 9:00 AM in KST is 3:00 AM in TRT.
What time is it in TRT right now?
TRT uses TRT at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -6h offset from KST.
What is the best time to call TRT from KST?
Call between 3:00 PM and 5:00 PM KST — that maps to 9:00 AM–11:00 AM TRT and keeps both parties inside the working day.
Which is behind, KST or TRT?
KST is 6 hours behind TRT. When it is 12:00 PM in KST it is 6:00 AM in TRT.
Does daylight saving time affect the KST–TRT difference?
Neither zone observes daylight saving time, so the -6h offset between KST and TRT 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 TRT?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between KST and TRT?
TRT is -6h from KST.
What timezone is KST in?
KST operates on its local timezone.
What timezone is TRT in?
TRT 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 TRT timezone?
Major cities in the TRT timezone include Istanbul, Ankara, Izmir, Bursa, Antalya.
What is the UTC offset for TRT?
Turkey Time (TRT) is at UTC+03:00.
What should I know about the TRT timezone?
Turkey has used a permanent UTC+03:00 since September 2016. TRT is level with Moscow Standard Time and Arabia Standard Time all year.
When is it midnight in KST, what time is it in TRT?
When it is 12:00 AM (midnight) in KST (KST), it is -6h later in TRT (TRT).
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See every conversion from KST →·See every conversion from TRT →