What is 8 AM IST in KST?
8 AM IST = 11:30 AM KST (11:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
Timezone converter
IST to KST currently uses India Time in Asia/Kolkata and Korean Time in Asia/Seoul as the live reference pair. Right now the gap is +3h 30m, and the sections below break that into meeting-time shortcuts, workday overlap, DST changes, and city coverage on both sides.
Last updated Apr 22, 2026. Offset math, DST behavior, and city coverage on both sides are refreshed from the live timezone dataset during the page revalidation window.
IST is ambiguous in this dataset, so the live converter uses Asia/Kolkata as the busiest reference zone while the city list below shows the wider label family.
From
India Time
Asia/Kolkata · GMT+5:30 +05:30
Major markets in this grouping include Mumbai, Delhi, Bengaluru, Hyderabad.
To
Korean Time
Asia/Seoul · GMT+9 +09:00
Major markets in this grouping include Seoul, Busan, Pyongyang, Incheon.
Current gap
+3h 30m
IST +05:30 vs KST +09:00
9-to-5 overlap
4.5h
IST 9:00 AM previous day to 1:30 PM previous day
Representative countries
India, Israel, and Sri Lanka / South Korea and North Korea
Based on the busiest city and zone usage found in the current dataset.
IST and KST currently connect Mumbai and Seoul with a live gap of +3h 30m. Representative coverage on the IST side is anchored by Mumbai, Delhi, Bengaluru, and Hyderabad, while the KST side is anchored by Seoul, Busan, Pyongyang, and Incheon.
Using a simple 9:00 AM to 5:00 PM workday on both sides, the pair shares about 4.5 hours of business overlap - roughly IST 9:00 AM previous day to 1:30 PM previous day, which is KST 12:30 PM previous day to 5:00 PM previous day. There is still a usable shared block in the morning or afternoon, so teams can usually meet without pushing too far outside standard hours.
The live gap is +3h 30m right now, based on Asia/Kolkata at +05:30 and Asia/Seoul at +09:00. Neither reference zone shows an offset change in the next year, so the gap should stay stable.
On the IST side, the current dataset is anchored by cities such as Mumbai, India; Delhi, India; Bengaluru, India; Hyderabad, India; Ahmedabad, India; Chennai, India. That makes this page useful for real-world coordination patterns rather than only abstract offset math.
On the KST side, the live reference set includes Seoul, South Korea; Busan, South Korea; Pyongyang, North Korea; Incheon, South Korea; Daegu, South Korea; Daejeon, South Korea. In practice, that means the conversion is tied to recognizable business, travel, and support hubs rather than a single anonymous timezone label.
Country usage on the two sides currently includes India, Israel, and Sri Lanka for IST and South Korea and North Korea for KST. That country coverage helps explain why some pairs feel like outsourcing, logistics, gaming, finance, or travel-heavy conversions while others are more niche.
Adjust the time — digits roll like an odometer. Swap button flips the zones.
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| IST | KST | Day relation |
|---|---|---|
| 9:00 AM | 12:30 PMWed, Apr 22 | same day |
| 12:00 PM | 3:30 PMWed, Apr 22 | same day |
| 3:00 PM | 6:30 PMWed, Apr 22 | same day |
| 6:00 PM | 9:30 PMWed, Apr 22 | same day |
| 9:00 PM | 12:30 AMThu, Apr 23 | next day |
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| KST | IST | Day relation |
|---|---|---|
| 9:00 AM | 5:30 AMWed, Apr 22 | same day |
| 12:00 PM | 8:30 AMWed, Apr 22 | same day |
| 3:00 PM | 11:30 AMWed, Apr 22 | same day |
| 6:00 PM | 2:30 PMWed, Apr 22 | same day |
| 9:00 PM | 5:30 PMWed, Apr 22 | same day |
IST to KST meeting times is easiest to read as a working-day range rather than a single spot conversion. In the current snapshot, 9:00 AM lands at 12:30 PM, while 9:00 PM lands at 12:30 AM, which makes the practical handoff window much easier to scan.
KST to IST meeting times is easiest to read as a working-day range rather than a single spot conversion. In the current snapshot, 9:00 AM lands at 5:30 AM, while 9:00 PM lands at 5:30 PM, which makes the practical handoff window much easier to scan.
These direct answers are here for the exact-intent searches people actually use, like “10 AM IST to KST” or “4 PM IST in KST”.
8 AM IST = 11:30 AM KST (11:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
9 AM IST = 12:30 PM KST (12:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
10 AM IST = 1:30 PM KST (13:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
11 AM IST = 2:30 PM KST (14:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
12 PM IST = 3:30 PM KST (15:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
1 PM IST = 4:30 PM KST (16:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
2 PM IST = 5:30 PM KST (17:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
3 PM IST = 6:30 PM KST (18:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
4 PM IST = 7:30 PM KST (19:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
5 PM IST = 8:30 PM KST (20:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
6 PM IST = 9:30 PM KST (21:30). On today's live calendar that lands on Wed, Apr 22 in KST, which means the answer is a same day conversion rather than a static offset lookup.
9 PM IST = 12:30 AM KST (00:30). On today's live calendar that lands on Thu, Apr 23 in KST, which means the answer is a next day conversion rather than a static offset lookup.
The live gap is +3h 30m right now, based on Asia/Kolkata at +05:30 and Asia/Seoul at +09:00. Neither reference zone shows an offset change in the next year, so the gap should stay stable.
The most usable workday block right now is about 4.5 hours: IST 9:00 AM previous day to 1:30 PM previous day, which lines up with KST 12:30 PM previous day to 5:00 PM previous day.
Asia/Kolkata
GMT+5:30 · +05:30
Asia/Seoul
GMT+9 · +09:00
These are the busiest live references selected from the abbreviation families on this page.
| IST | KST |
|---|---|
| 05:30 | 09:00 |
| 06:30 | 10:00 |
| 07:30 | 11:00 |
| 08:30 | 12:00 |
| 09:30 | 13:00 |
| 10:30 | 14:00 |
| 11:30 | 15:00 |
| 12:30 | 16:00 |
| 13:30 | 17:00 |
| 14:30 | 18:00 |
| 15:30 | 19:00 |
| 16:30 | 20:00 |
| 17:30 | 21:00 |
| 18:30 | 22:00 |
| 19:30 | 23:00 |
| 20:30 | 00:00 |
| 21:30 | 01:00 |
| 22:30 | 02:00 |
| 23:30 | 03:00 |
| 00:30 | 04:00 |
| 01:30 | 05:00 |
| 02:30 | 06:00 |
| 03:30 | 07:00 |
| 04:30 | 08:00 |
Countries represented here include India, Israel, and Sri Lanka.
Countries represented here include South Korea and North Korea.
Once a conversion pair matters, people usually need a city page, compare page, or a broader browse surface next.
Interactive converter
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