Sydney to Seongnam-si
Converting a fixed time. Australia/Sydney → Asia/Seoul · 8,311 km (5,161 miles) apart
Clocks go forward 1 hour on Sunday, 4th October 2026, at 1:59 am local time (3:00 am after the change).
Clocks here do not change — this zone stays on the same offset all year.
Convert a specific time minutes work, not just whole hours
Hour by hour
| Sydney | Seongnam-si | 24h | Good to call? |
|---|---|---|---|
| 12am | 11pm Wed | 00:00 → 23:00 | asleep in Seongnam-si |
| 1am | 12am | 01:00 → 00:00 | asleep in Seongnam-si |
| 2am | 1am | 02:00 → 01:00 | asleep in Seongnam-si |
| 3am | 2am | 03:00 → 02:00 | asleep in Seongnam-si |
| 4am | 3am | 04:00 → 03:00 | asleep in Seongnam-si |
| 5am | 4am | 05:00 → 04:00 | asleep in Seongnam-si |
| 6am | 5am | 06:00 → 05:00 | asleep in Seongnam-si |
| 7am | 6am | 07:00 → 06:00 | asleep in Seongnam-si |
| 8am | 7am | 08:00 → 07:00 | awake, not at work |
| 9am | 8am | 09:00 → 08:00 | awake, not at work |
| 10am | 9am | 10:00 → 09:00 | both at work |
| 11am | 10am | 11:00 → 10:00 | both at work |
| 12pm | 11am | 12:00 → 11:00 | both at work |
| 1pm | 12pm | 13:00 → 12:00 | both at work |
| 2pm | 1pm | 14:00 → 13:00 | both at work |
| 3pm now | 2pm | 15:00 → 14:00 | both at work |
| 4pm | 3pm | 16:00 → 15:00 | both at work |
| 5pm | 4pm | 17:00 → 16:00 | awake, not at work |
| 6pm | 5pm | 18:00 → 17:00 | awake, not at work |
| 7pm | 6pm | 19:00 → 18:00 | awake, not at work |
| 8pm | 7pm | 20:00 → 19:00 | awake, not at work |
| 9pm | 8pm | 21:00 → 20:00 | awake, not at work |
| 10pm | 9pm | 22:00 → 21:00 | asleep in Sydney |
| 11pm | 10pm | 23:00 → 22:00 | asleep in Seongnam-si |
Call times
Both places are at work between 10am and 17:00 in Sydney — 9am to 3pm at the other end.
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Questions people ask
What time is it in Seongnam-si when it is 5:00 pm in Sydney?
4:00 pm in Seongnam-si the same day.
How many hours ahead is Seongnam-si of Sydney?
Seongnam-si is 1 hour behind Sydney. That gap is not fixed: it changes when either place starts or ends daylight saving. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between Sydney and Seongnam-si?
Both places are at work between 10am and 17:00 in Sydney — 9am to 3pm at the other end.
When does the difference between Sydney and Seongnam-si change?
Sydney: Clocks go forward 1 hour on Sunday, 4th October 2026, at 1:59 am local time (3:00 am after the change). Seongnam-si does not change its clocks, so the gap shifts by an hour on that date.