Colombo SeoulTime Converter
Colombo (IST, UTC+5:30) is currently 3 hours 30 minutes behind Seoul (KST, UTC+9). Compare live clocks, convert any hour, and find times to meet.
Quick answer
When it's in Colombo, it's the same day in Seoul.
Colombo (IST) runs 3 hours 30 minutes behind Seoul (KST). Both sides keep standard office hours with a real 9–6 overlap — the highlighted window below works for everyone.
- Time difference
- +3h 30m
- Colombo
- UTC+5:30
- Seoul
- UTC+9
- Best call window
- 9:00 AM IST
Colombo to Seoul conversion table
The next 12 hours in Colombo and the matching local time in Seoul. The current hour is highlighted; drag the converter's slider and the table follows.
| Colombo · IST | Seoul · KST |
|---|---|
| NOW Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Best time to meet between Colombo & Seoul
Working hours are 9am–6pm in each city. The bright band is where they overlap — when both sides are at their desks.
This time difference never changes
Neither side observes daylight saving against the other, so the gap stays constant all year. Colombo does not observe daylight saving time. Seoul does not observe daylight saving time. This page always shows the live, DST-aware difference.
Related time zone conversions
Jump straight to another pair — every combination is a live tool, not an article.
From Colombo
To Seoul
One source of truth — for you and your AI
This page exposes the same answer as structured data, so when you ask an assistant "what's 9am Colombo time in Seoul?", it can cite the exact, DST-aware result — not a stale blog post.
- Schema.org JSON-LD on every converter page
- A machine-readable facts island with IANA zones and every possible offset
- Live times in <time datetime> elements with explicit UTC offsets
{
"pair": "Colombo → Seoul",
"url": "https://worldclock.pro/en/convert/colombo-to-seoul",
"from": {
"name": "Colombo",
"type": "city",
"abbreviation": "IST",
"daylightAbbreviation": null,
"iana": "Asia/Colombo",
"standardUtcOffset": "+05:30",
"daylightUtcOffset": null,
"referenceCity": "Colombo"
},
"to": {
"name": "Seoul",
"type": "city",
"abbreviation": "KST",
"daylightAbbreviation": null,
"iana": "Asia/Seoul",
"standardUtcOffset": "+09:00",
"daylightUtcOffset": null,
"referenceCity": "Seoul"
},
"currentDifferenceMinutes": 210,
"possibleDifferencesMinutes": [
210
],
"note": "The difference is constant year-round."
}
Frequently asked questions
What is the time difference between Colombo and Seoul?
Colombo is currently 3 hours 30 minutes behind Seoul. Colombo is on IST (UTC+5:30) and Seoul is on KST (UTC+9). The difference can change when either side starts or ends daylight saving time.
Is Seoul ahead of or behind Colombo?
Seoul is currently 3 hours 30 minutes ahead of Colombo.
When it is 9:00 AM in Colombo, what time is it in Seoul?
When it is 9:00 AM on a Monday in Colombo, it is 12:30 PM in Seoul.
Do Colombo and Seoul observe daylight saving time?
Colombo does not observe daylight saving time. Seoul does not observe daylight saving time.
How do I convert Colombo time to Seoul time?
Add 3 hours 30 minutes to any time in Colombo to get the time in Seoul. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
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