What is the time difference between Dublin and Tokyo?

Tokyo is 8 hours ahead of Dublin. 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 Tokyo from Dublin?

Between 09:00–10:00 in Dublin, which is 17:00–18:00 in Tokyo. That is the only stretch where both cities are inside a 09:00–18:00 day.

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.

Does Tokyo observe daylight saving time?

No. Tokyo stays on UTC+9 all year, so its clocks never move.

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

It is 20:00 in Tokyo, 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 Dublin and Tokyo use?

Dublin uses Europe/Dublin, currently UTC+1 (IST), and Tokyo uses Asia/Tokyo, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Dublin time to Tokyo time

Tokyo is 8 hours ahead of Dublin right now, so midday in Dublin lands in the evening in Tokyo.

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 Dublin, and what the clock reads in Tokyo at that same moment.

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

Daylight saving time

Tokyo keeps one offset all year while Dublin moves twice. That is the whole reason this difference is seasonal.

Dublin

Observes daylight saving time

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

Tokyo

Does not observe daylight saving time

Standard: UTC+9

When you can actually talk

The window is 1 hour wide — 09:00–10:00 in Dublin, 17:00–18:00 in Tokyo.

Dublin 09:00–10:00Tokyo 17:00–18:00

Reference

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

	Dublin	Tokyo
IANA zone	Europe/Dublin	Asia/Tokyo
Abbreviation	IST	UTC+9
Standard offset	UTC+0	UTC+9
Daylight offset	UTC+1	—
Clock changes this year	2	0
Country	Ireland	Japan

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

Common questions

What is the time difference between Dublin and Tokyo?: Tokyo is 8 hours ahead of Dublin. 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 Tokyo from Dublin?: Between 09:00–10:00 in Dublin, which is 17:00–18:00 in Tokyo. That is the only stretch where both cities are inside a 09:00–18:00 day.
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.
Does Tokyo observe daylight saving time?: No. Tokyo stays on UTC+9 all year, so its clocks never move.
If it is midday in Dublin, what time is it in Tokyo?: It is 20:00 in Tokyo, 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 Dublin and Tokyo use?: Dublin uses Europe/Dublin, currently UTC+1 (IST), and Tokyo uses Asia/Tokyo, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.