What is the time difference between Sydney and Dublin?

Dublin is 9 hours behind Sydney. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call Dublin from Sydney?

There is no time inside normal working hours in both cities, so someone has to take the call outside them. The nearest workable windows are listed above — pick one and alternate who gets the awkward slot.

Does Sydney observe daylight saving time?

Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.

Does Dublin observe daylight saving time?

Yes. Dublin runs on UTC+0 in winter and UTC+1 in summer. The next change is on 2026-10-25, when clocks go back by 60 minutes.

If it is midday in Sydney, what time is it in Dublin?

It is 03:00 in Dublin, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do Sydney and Dublin use?

Sydney uses Australia/Sydney, currently UTC+10 (AEST), and Dublin uses Europe/Dublin, currently UTC+1 (IST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Sydney time to Dublin time

Dublin is 9 hours behind Sydney right now, so midday in Sydney lands in the small hours in Dublin.

Convert a time

From

Date

Time

Converted time

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The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Every hour of a day in Sydney, and what the clock reads in Dublin at that same moment.

Sydney	Dublin
00:00	15:00previous day
01:00	16:00previous day
02:00	17:00previous day
03:00	18:00previous day
04:00	19:00previous day
05:00	20:00previous day
06:00	21:00previous day
07:00	22:00previous day
08:00	23:00previous day
09:00	00:00
10:00	01:00
11:00	02:00
12:00	03:00
13:00	04:00
14:00	05:00
15:00	06:00
16:00	07:00
17:00	08:00
18:00	09:00
19:00	10:00
20:00	11:00
21:00	12:00
22:00	13:00
23:00	14:00

Daylight saving time

Both cities change their clocks, but not necessarily on the same date — which is why the difference between them shifts for a few weeks each year.

Sydney

Observes daylight saving time

Standard: UTC+10
Daylight: UTC+11
Next change: 2026-10-04 +60m

Dublin

Observes daylight saving time

Standard: UTC+0
Daylight: UTC+1
Next change: 2026-10-25 −60m

When you can actually talk

There is no hour where both cities are inside a 09:00–18:00 working day. Someone has to move — the nearest workable windows are below.

Sydney 10:00–03:00Dublin 01:00–18:00
Sydney 09:00–10:00Dublin 00:00–01:00

Reference

The underlying data, in case you need to put it in a calendar invitation or a configuration file.

	Sydney	Dublin
IANA zone	Australia/Sydney	Europe/Dublin
Abbreviation	AEST	IST
Standard offset	UTC+10	UTC+0
Daylight offset	UTC+11	UTC+1
Clock changes this year	2	2
Country	Australia	Ireland

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between Sydney and Dublin?: Dublin is 9 hours behind Sydney. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call Dublin from Sydney?: There is no time inside normal working hours in both cities, so someone has to take the call outside them. The nearest workable windows are listed above — pick one and alternate who gets the awkward slot.
Does Sydney observe daylight saving time?: Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.
Does Dublin observe daylight saving time?: Yes. Dublin runs on UTC+0 in winter and UTC+1 in summer. The next change is on 2026-10-25, when clocks go back by 60 minutes.
If it is midday in Sydney, what time is it in Dublin?: It is 03:00 in Dublin, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do Sydney and Dublin use?: Sydney uses Australia/Sydney, currently UTC+10 (AEST), and Dublin uses Europe/Dublin, currently UTC+1 (IST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.