Live offset · Year-round DST · Shareable URL

Time difference
Seoul and Chennai

Live clocks (KST ↔ IST), the current gap, month-by-month offset changes (steady this year), and a full 24-hour map from Seoul to Chennai.

1

Live gap

See the current offset between Seoul and Chennai, with IANA-backed clocks updating every second.

2

Year-round chart

Neither city shifts clocks seasonally—the gap stays steady through 2026.

3

Hour-by-hour

Scroll the 24-hour table to map any civil hour in Seoul into Chennai with day-shift cues.

Time difference workspace

How Seoul and Chennai line up today.

2 cities · live offsetSteady gap
City pair

Seoul Chennai

Chennai is 3.5h behind Seoul at this moment. Compare live clocks, seasonal DST shifts, and hour-by-hour conversions below.

Live offsetIANA zones · updates automatically
Seoul
Asia/Seoul
ZoneKST
Offset nowUTC+9
Hour gap
−3:30

ChennaiSeoul

Chennai
Asia/Kolkata
ZoneIST
Offset nowUTC+5:30
About this pairUseful when planning calls or docs

Time difference between Seoul and Chennai: Chennai is currently 3.5 hours behind Seoul.

This difference stays steady year-round because neither city observes Daylight Saving Time. The monthly table below shows the exact offset gap month by month. For practical scheduling, jump to the best-time-to-meet page or the 24-hour conversion table below.

Jump aheadPick the view you need next
Best time to meetMonthly offsets24-hour table
Live clocks workspace

Clocks side by side.

Updates every second
Right nowAsia/Seoul · Asia/Kolkata
Seoul
Asia/Seoul
Live time
--:--
OffsetUTC+9
AbbreviationKST
No DST
Chennai
Asia/Kolkata
Live time
--:--
OffsetUTC+5:30
AbbreviationIST
No DST
Relationship

Chennai is 3.5h behind Seoul.

Neither city shifts clocks seasonally—expect this relationship to stay fixed unless rules change at the governmental level.

Next stepsPlan overlap or convert zones
Best time to meet →KST → IST →Overlap Finder →
Year-round

Offset changes by month

Sampled mid-month for 2026. Compares Chennai versus Seoul; a value of +3h means Chennai is three hours ahead of Seoul.

2026 calendar

Month-by-month gap

MonthDifference (Chennai vs Seoul)
January-3.5h
February-3.5h
March-3.5h
April-3.5h
May-3.5h
June-3.5h
July-3.5h
August-3.5h
September-3.5h
October-3.5h
November-3.5h
December-3.5h
Hour by hour

24-hour conversion table

Every civil hour in Seoul mapped into Chennai; day-shift cues follow active DST for both zones today.

SeoulChennai

Hourly wall-clock map for today — midnight crossings show as day shifts.

Seoul with part-of-day icon
Chennai arrow and converted time
Day
  • 00:00
    20:30
    Prev day
  • 01:00
    21:30
    Prev day
  • 02:00
    22:30
    Prev day
  • 03:00
    23:30
    Prev day
  • 04:00
    00:30
    Same day
  • 05:00
    01:30
    Same day
  • 06:00
    02:30
    Same day
  • 07:00
    03:30
    Same day
  • 08:00
    04:30
    Same day
  • 09:00
    05:30
    Same day
  • 10:00
    06:30
    Same day
  • 11:00
    07:30
    Same day
  • 12:00
    08:30
    Same day
  • 13:00
    09:30
    Same day
  • 14:00
    10:30
    Same day
  • 15:00
    11:30
    Same day
  • 16:00
    12:30
    Same day
  • 17:00
    13:30
    Same day
  • 18:00
    14:30
    Same day
  • 19:00
    15:30
    Same day
  • 20:00
    16:30
    Same day
  • 21:00
    17:30
    Same day
  • 22:00
    18:30
    Same day
  • 23:00
    19:30
    Same day
Uses your browser's IANA zone data — choose another date in the converter for historical or future days.
Keep exploring

Related pages

More time-difference routes, pairwise best times, triple-city overlaps, and conversions tied to Seoul, Chennai, or this corridor.

FAQ

Frequently asked questions

Offsets between Seoul and Chennai, DST shifts, scheduling, and how we source timezone data—plus how to share this page.

Currently, Chennai is 3.5h behind Seoul. This may change through the year if either city observes Daylight Saving Time.