What time is it in Seoul when it's 9 AM in Dublin?

5:00 PM — as of 3 October 2026. Seoul is 8 hours ahead of Dublin.

Does the time difference between Dublin and Seoul change?

Yes. In 2026 it's 9 hours or 8 hours, depending on the date, because only Dublin changes its clocks.

What's the best time for a call between Dublin and Seoul?

There's no hour when both cities are in working hours (09:00–17:00). The fairest is around 07:00 in Dublin (15:00 in Seoul).

What time zones are Dublin and Seoul in?

Dublin uses Europe/Dublin (UTC+1 today); Seoul uses Asia/Seoul (UTC+9 today).

Time difference between Dublin and Seoul

Seoul is 8 hours ahead of Dublin. When it's 9:00 in Dublin, it's 17:00 in Seoul.

From

Seoul is 8 hours ahead of Dublin.

On Saturday, 3 October 2026, 09:00 in Dublin is 17:00 in Seoul. Dublin is UTC+1; Seoul is UTC+9.

The gap through 2026

1 Jan – 29 MarSeoul is 9 hours ahead of Dublin.
29 Mar – 25 OctSeoul is 8 hours ahead of Dublin.
25 Oct – 31 DecSeoul is 9 hours ahead of Dublin.

Dublin moves its clocks forward on 29 March (UTC → UTC+1).
Dublin moves its clocks back on 25 October (UTC+1 → UTC).

Dublin to Seoul, hour by hour

On Monday 5 October.

Dublin	Seoul
07:00 Early morning	15:00 Working hours
08:00 Early morning	16:00 Working hours
09:00 Working hours	17:00 Evening
10:00 Working hours	18:00 Evening
11:00 Working hours	19:00 Evening
12:00 Working hours	20:00 Evening
13:00 Working hours	21:00 Evening
14:00 Working hours	22:00 Sleeping hours
15:00 Working hours	23:00 Sleeping hours
16:00 Working hours	00:00+1 Sleeping hours
17:00 Evening	01:00+1 Sleeping hours
18:00 Evening	02:00+1 Sleeping hours
19:00 Evening	03:00+1 Sleeping hours
20:00 Evening	04:00+1 Sleeping hours
21:00 Evening	05:00+1 Sleeping hours
22:00 Sleeping hours	06:00+1 Sleeping hours

Daylight saving in 2026

Dublin moves its clocks forward on Sunday 29 March (UTC → UTC+1).
Dublin moves its clocks back on Sunday 25 October (UTC+1 → UTC).

1 Jan – 29 MarSeoul is 9 hours ahead of Dublin.
29 Mar – 25 OctSeoul is 8 hours ahead of Dublin.
25 Oct – 31 DecSeoul is 9 hours ahead of Dublin.

Best times for a call

Working hours (09:00–17:00) in Dublin and Seoul don't overlap, so any call is early or late for someone.

Dublin 07:00Early morningSeoul 15:00Working hours
Dublin 08:00Early morningSeoul 16:00Working hours
Dublin 09:00Working hoursSeoul 17:00Evening

How the time difference calculator works

The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.

Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.

Examples

London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.

Good for

Knowing when a colleague's day starts
Setting expectations for replies across time zones
Planning travel and jet lag

Frequently asked questions

What time is it in Seoul when it's 9 AM in Dublin?: 5:00 PM — as of 3 October 2026. Seoul is 8 hours ahead of Dublin.
Does the time difference between Dublin and Seoul change?: Yes. In 2026 it's 9 hours or 8 hours, depending on the date, because only Dublin changes its clocks.
What's the best time for a call between Dublin and Seoul?: There's no hour when both cities are in working hours (09:00–17:00). The fairest is around 07:00 in Dublin (15:00 in Seoul).
What time zones are Dublin and Seoul in?: Dublin uses Europe/Dublin (UTC+1 today); Seoul uses Asia/Seoul (UTC+9 today).

See everyone's local time as you schedule

Daykite converts every time in your calendar, so nobody gets an invite at 3 a.m.

Try Daykite free