Live offset · Year-round DST · Shareable URL

Time difference
Seoul and Sydney

Live clocks (KST ↔ AEST), the current gap, month-by-month offset changes, and a full 24-hour map from Seoul to Sydney.

1

Live gap

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

2

Year-round chart

DST can shift the gap by an hour twice a year—the 2026 month table shows every change.

3

Hour-by-hour

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

Time difference workspace

How Seoul and Sydney line up today.

2 cities · live offsetGap shifts yearly
City pair

Seoul Sydney

Sydney is 1h ahead of 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
+1h

SydneySeoul

Sydney
Australia/Sydney
ZoneAEST / AEDT
Offset nowUTC+10
About this pairUseful when planning calls or docs

Time difference between Seoul and Sydney: Sydney is currently 2 hours ahead of Seoul.

This difference is not constant: in winter Seoul is 2 hours behind Sydney, while in summer (when one or both observe DST) the gap shifts to 1 hour behind. 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 · Australia/Sydney
Seoul
Asia/Seoul
Live time
--:--
OffsetUTC+9
AbbreviationKST
No DST
Sydney
Australia/Sydney
Live time
--:--
OffsetUTC+10
AbbreviationAEST / AEDT
Observes DST
Relationship

Sydney is 1h ahead of Seoul.

DST rules can widen or shrink this gap for a few weeks each spring and autumn—the month table below shows how many hours Sydney sits ahead of or behind Seoul through the calendar year.

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

Offset changes by month

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

2026 calendar

Month-by-month gap

MonthDifference (Sydney vs Seoul)
January+2h
February+2h
March+2h
April+1h
May+1h
June+1h
July+1h
August+1h
September+1h
October+2h
November+2h
December+2h
Hour by hour

24-hour conversion table

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

SeoulSydney

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

Seoul with part-of-day icon
Sydney arrow and converted time
Day
  • 00:00
    01:00
    Same day
  • 01:00
    02:00
    Same day
  • 02:00
    03:00
    Same day
  • 03:00
    04:00
    Same day
  • 04:00
    05:00
    Same day
  • 05:00
    06:00
    Same day
  • 06:00
    07:00
    Same day
  • 07:00
    08:00
    Same day
  • 08:00
    09:00
    Same day
  • 09:00
    10:00
    Same day
  • 10:00
    11:00
    Same day
  • 11:00
    12:00
    Same day
  • 12:00
    13:00
    Same day
  • 13:00
    14:00
    Same day
  • 14:00
    15:00
    Same day
  • 15:00
    16:00
    Same day
  • 16:00
    17:00
    Same day
  • 17:00
    18:00
    Same day
  • 18:00
    19:00
    Same day
  • 19:00
    20:00
    Same day
  • 20:00
    21:00
    Same day
  • 21:00
    22:00
    Same day
  • 22:00
    23:00
    Same day
  • 23:00
    00:00
    Next 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, Sydney, or this corridor.

FAQ

Frequently asked questions

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

Currently, Sydney is 1h ahead of Seoul. This may change through the year if either city observes Daylight Saving Time.