KST to GST Converter
Convert time between Korea Standard Time (KST) and Gulf Standard Time (GST)
Korea Standard Time (KST)
Gulf Standard Time (GST)
Time Difference
Gulf Standard Time (GST) is 0 hours ahead of Korea Standard Time (KST)
Select Date
Select Time
Quick Reference
| KST | GST |
|---|---|
| 11:00 | 06:00 |
| 13:00 | 08:00 |
| 15:00 | 10:00 |
| 17:00 | 12:00 |
| 19:00 | 14:00 |
| 21:00 | 16:00 |
| 23:00 | 18:00 |
| 01:00 | 20:00 |
| 03:00 | 22:00 |
| 05:00 | 00:00 |
| 07:00 | 02:00 |
| 09:00 | 04:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About KST to GST Time Conversion
Converting time from Korea Standard Time (KST) to Gulf Standard Time (GST) is essential for coordinating between South Korea and the Gulf states. KST is UTC+9 and GST is UTC+4, so GST is 5 hours behind KST. Neither region observes daylight saving time, so the offset is rock-steady year-round.
This stable, moderate gap means business hours overlap well — the back half of a Korean workday lines up with the start of the Gulf workday. Whether you are coordinating with Dubai, Abu Dhabi, or Muscat, our IANA-based converter delivers reliable results every day of the year.
Common Use Cases for KST to GST Conversion
Business & Work
- Scheduling calls between Korean teams and Dubai or Abu Dhabi offices
- Coordinating shipping, energy, or construction operations between South Korea and the Gulf
- Planning meetings between Seoul and UAE or Oman partners
Personal & Travel
- Keeping in touch with family or friends working in the Gulf states
- Planning travel from South Korea to Dubai, Abu Dhabi, or Muscat
- Scheduling online prayer, study, or virtual events across both regions
Time Zone Information
Korea Standard Time (KST)
- UTC Offset: UTC+9 (no DST observed)
- IANA Timezone: Asia/Seoul
- Daylight Saving: South Korea does not observe daylight saving time
- Major Cities: Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju, Jeju
- Coverage: All of South Korea
Gulf Standard Time (GST)
- UTC Offset: UTC+4 (no DST observed)
- IANA Timezone: Asia/Dubai
- Daylight Saving: Gulf states do not observe daylight saving time
- Major Cities: Dubai, Abu Dhabi, Sharjah, Muscat
- Coverage: United Arab Emirates and Oman
Quick Reference: KST to GST
Remember: GST is always 5 hours behind KST. Neither region observes daylight saving time, so this offset is constant.
Frequently Asked Questions
What is the time difference between KST and GST?
Korea Standard Time (KST) is UTC+9, while Gulf Standard Time (GST) is UTC+4. GST is 5 hours behind KST, so when it is 12:00 PM in Seoul, it is 7:00 AM in Dubai.
Does the KST to GST time difference change throughout the year?
No. Neither South Korea nor the Gulf states (UAE, Oman) observe daylight saving time. KST stays at UTC+9 and GST stays at UTC+4 every day of the year, so the 5-hour gap is constant.
How can I quickly convert KST to GST?
Subtract 5 hours from the Korean time. For example, 2 PM KST is 9 AM GST, and 6 PM KST is 1 PM GST.
What are the best times to schedule KST to GST business calls?
Overlap is solid. 1–6 PM KST is 8 AM–1 PM GST, giving teams a wide window across the Korean afternoon and the Gulf morning. This pair is one of the easier Asia-Middle East conversions to schedule.
Which regions and cities use GST?
GST (UTC+4) is used in the United Arab Emirates and Oman. Major cities include Dubai, Abu Dhabi, Sharjah, and Muscat. Saudi Arabia, Bahrain, and Qatar use Arabia Standard Time (AST/UTC+3), which is 30 minutes earlier than GST.
Which regions use KST?
KST (UTC+9) is used by all of South Korea. Major cities include Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju, and Jeju. South Korea does not observe daylight saving time.
Pro Tips
- • GST is always 5 hours behind KST — subtract 5 hours from Korean time.
- • Neither region observes DST, so this conversion is constant year-round.
- • For live calls, 1–6 PM KST lines up with 8 AM–1 PM GST — a wide bridge between Korean afternoon and Gulf morning.
- • Friday is the start of the weekend in many Gulf states, while South Korea observes Saturday-Sunday weekends — overlapping working days are Sunday through Thursday.
- • Korean shipbuilding and energy firms often coordinate closely with Gulf partners; this stable offset helps maintain steady operations.
- • Direct flights between Seoul and Dubai take roughly 9 hours and produce moderate jet lag.