Live · calculated from the IANA time-zone database

Time difference between Tokyo and Dublin

Short answer

Dublin is 8 hours behind Tokyo. Right now it is 21:33 in Tokyo (GMT+9, UTC+9) and 13:33 in Dublin (GMT+1, UTC+1).

Right now

Tokyo · Japan

21:33

Tuesday, September 15, 2026

Japan Standard Time · GMT+9 · UTC+9

Dublin · Ireland

13:33

Tuesday, September 15, 2026

Irish Standard Time · GMT+1 · UTC+1

Times at the moment this page was generated. Reload for a fresh reading.

Does the difference between Tokyo and Dublin change during the year?

Yes. For 210 days of 2026 the difference is 8 hours, but it moves whenever Tokyo or Dublin enters or leaves daylight saving time. Here is the full 2026 calendar (dates in UTC):

From	Until	Dublin vs Tokyo
January 1	March 29	−9 h
March 29	October 25	−8 h
October 25	December 31	−9 h

The highlighted row is the current period. Every date comes from each zone's official rules, not from a hand-typed table.

Best time to call Dublin from Tokyo (and vice versa)

With 8 hours between them there is no hour at which Tokyo and Dublin are both inside a 9:00–17:00 working day. Teams split across these two cities usually alternate the sacrifice: one week the meeting lands early (7:00–8:00) in Dublin and late (18:00–19:00) in the other city, the next week the other way round. The Timezone Matcher grid shades exactly those compromise hours.

Tokyo to Dublin conversion table

Each Tokyo hour and its equivalent in Dublin today. Rows shaded green are working hours (9:00–17:00) in both cities at once.

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

Looking for it the other way round? This page covers both directions: Dublin to Tokyo is the same difference with the sign flipped.

The two time zones

Tokyo — Asia/Tokyo

Tokyo keeps Japan Standard Time (JST), a fixed UTC+9 with no daylight saving. Japan and South Korea share the offset, so Tokyo and Seoul are always on the same clock.

Dublin — Europe/Dublin

Dublin follows the same clock as London (UTC+0 in winter, UTC+1 in summer) — the European base for many US tech companies precisely because of its 5-hour gap with New York.

Frequently asked questions

How many hours difference between Tokyo and Dublin?

Dublin is 8 hours behind Tokyo. For most of the year (210 days) the difference is 8 hours; it shifts during the weeks when one of the two cities enters or leaves daylight saving time.

When it is 12:00 noon in Tokyo, what time is it in Dublin?

04:00 in Dublin (at today's difference of 8 hours).

What is the best time for a meeting between Tokyo and Dublin?

There is no overlap between the 9:00–17:00 working days of Tokyo and Dublin. Teams usually alternate: an early-morning slot in Dublin lands in the late evening of the other city.

Do Tokyo and Dublin observe daylight saving time?

Tokyo: no. Dublin: yes. Because only one of them changes its clocks, the difference moves by one hour twice a year.

What time zone is Tokyo in? And Dublin?

Tokyo: Japan Standard Time (Asia/Tokyo, UTC+9). Dublin: Irish Standard Time (Europe/Dublin, UTC+1).

Tools

Meeting grid — add both cities and click a slot

Time zone converter — any city, any time

Working hours overlap calculator

Daylight saving time 2027 — all dates