GST to South Korea
+5hGST
GSTSOURCESouth Korea
KSTGreen rows indicate typical business hours (9 AM - 5 PM)
GST and KST on the World Map
The map below highlights the GST (Gulf Standard Time) and KST (Korea Standard Time) timezone regions across the globe.
GST – Gulf Standard Time
UTC+04:00Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.
- •Dubai uses GST year-round with no daylight saving time.
- •GST is 9 hours ahead of EST and 4 hours ahead of GMT.
- •The Dubai Financial Market (DFM) operates on GST.
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).
GST vs South Korea: Offsets, DST and Best Call Times
GST runs on Gulf Standard Time (GST) at UTC+04:00. South Korea runs on Korean Standard Time (KST) at UTC+09:00. That puts GST 5 hours ahead of South Korea — a difference of +5h at the current offsets.
In practice, when it is 9:00 AM in GST it is 2:00 PM in South Korea. Midnight in GST is 5:00 AM in South Korea. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to South Korea time conversion table
| GST (GST) | South Korea (KST) | Day |
|---|---|---|
| 12:00 AM | 5:00 AM | same day |
| 6:00 AM | 11:00 AM | same day |
| 7:00 AM | 12:00 PM | same day |
| 8:00 AM | 1:00 PM | same day |
| 9:00 AM | 2:00 PM | same day |
| 12:00 PM | 5:00 PM | same day |
| 3:00 PM | 8:00 PM | same day |
| 5:00 PM | 10:00 PM | same day |
| 6:00 PM | 11:00 PM | same day |
| 9:00 PM | 2:00 AM | next day |
Why people convert GST to South Korea time
- Scheduling a call from GST to South Korea: a 10:00 AM start in GST lands at 3:00 PM in South Korea, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both GST and South Korea are inside the 9-to-5 working day between 9:00 AM and 12:00 PM GST time (2:00 PM–5:00 PM KST). That is roughly 3 hours of usable overlap.
- Watching a live event or market open: GST viewers need 2:00 PM in South Korea to catch a 9:00 AM start there, and 7:00 PM if the event is anchored to GST.
- Always state the zone abbreviation, not just the hour. "3:00 PM GST" is unambiguous; "3 PM" across a +5h gap is not.
- Block 9:00 AM–12:00 PM GST as the recurring meeting window if you work primarily from GST and need South Korea colleagues present.
About GST (Gulf Standard Time)
Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.
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.
Best time to call between GST and South Korea
Both GST and South Korea sit inside the 9 AM – 5 PM working day between 9:00 AM–12:00 PM GST, which is 2:00 PM–5:00 PM KST. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
GST and South Korea overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
GST is 5 hours ahead of South Korea (GST UTC+04:00 → KST UTC+09:00). The shared working window is 9:00 AM–12:00 PM GST. 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 GST and South Korea?
GST (GST, UTC+04:00) is 5 hours ahead of South Korea (KST, UTC+09:00). The gap is currently +5h.
How do I convert GST time to South Korea time?
Add +5h to GST local time. For example, 9:00 AM in GST is 2:00 PM in South Korea.
What time is it in South Korea right now?
South Korea uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +5h offset from GST.
What is the best time to call South Korea from GST?
Call between 9:00 AM and 12:00 PM GST — that maps to 2:00 PM–5:00 PM KST and keeps both parties inside the working day.
Which is ahead, GST or South Korea?
GST is 5 hours ahead of South Korea. When it is 12:00 PM in GST it is 5:00 PM in South Korea.
Do GST and South Korea use different time zones?
GST uses GST at UTC+04:00, while South Korea (South Korea) uses KST at UTC+09:00. The IANA identifiers are Asia/Dubai and Asia/Seoul.
Does daylight saving time affect the GST–South Korea difference?
Neither zone observes daylight saving time, so the +5h offset between GST and South Korea is fixed all year.
Which other cities share GST's time zone?
GST also covers Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
Which countries use GST, GST's zone?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Is there a day difference between GST and South Korea?
Not normally. The +5h gap only pushes the date over for late-evening times.
What is the time difference between GST and South Korea?
South Korea is +5h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is South Korea in?
South Korea operates on its local timezone.
Which countries use GST (Gulf Standard Time)?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Does GST observe daylight saving time?
No, GST does not observe daylight saving time and remains at UTC+04:00 year-round.
What are some interesting facts about GST?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
Which cities are in the KST timezone?
Major cities in the KST timezone include Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
What is the UTC offset for KST?
Korea Standard Time (KST) is at UTC+09:00.
What should I know about the KST timezone?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
When is it midnight in GST, what time is it in South Korea?
When it is 12:00 AM (midnight) in GST (GST), it is +5h later in South Korea (KST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More GST time conversions
- gst to dubai
- gst to uae
- gst to new york
- gst to london
- gst to tokyo
- gst to singapore
- gst to sydney
- gst to los angeles
- gst to paris
- gst to delhi
- gst to mumbai
- gst to berlin
- gst to hong kong
- gst to toronto
- gst to kathmandu
- new york to gst
- london to gst
- dubai to gst
- tokyo to gst
- singapore to gst
- sydney to gst
- los angeles to gst
- paris to gst
- delhi to gst
- mumbai to gst
- berlin to gst
- hong kong to gst
- toronto to gst
- kathmandu to gst
See every conversion from GST →·See every conversion from South Korea →