IRST to UTC Time Converter

Convert Irish Standard Time (IRST) to Coordinated Universal Time (UTC). Both time zones are shown live below; current offset between them is 1 hour behind.

Dublin · Irish Standard Time
23:14:12
Tuesday, May 12, 2026
GMT+1 · UTC+01:00
UTC · Coordinated Universal Time
22:14:12
Tuesday, May 12, 2026
UTC · UTC+00:00

Convert a specific time

From: IRST (Dublin)
To: UTC (UTC)
--:--

Daylight Saving status right now

IRST (Irish Standard Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00
UTC (Coordinated Universal Time)
Observes DST
No

Heads up: IRST observes DST while UTC does not. The 1-hour difference shown above will shift by one hour when IRST starts or ends DST.

When can IRST and UTC meet?

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01
02
03
04
05
06
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09
10
11
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23
IRST
UTC
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Dublin (IRST). Each row shows the local working-hours state in that zone for the same moment in time.
7 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 10:00–16:00 IRST (09:00–15:00 UTC).

Hour-by-hour IRST to UTC conversion table

IRST time (Dublin)UTC time (UTC)Status
00:00 Tue23:00 MonOff-hours both sides
01:00 Tue00:00 TueOff-hours both sides
02:00 Tue01:00 TueOff-hours both sides
03:00 Tue02:00 TueOff-hours both sides
04:00 Tue03:00 TueOff-hours both sides
05:00 Tue04:00 TueOff-hours both sides
06:00 Tue05:00 TueOff-hours both sides
07:00 Tue06:00 TueOff-hours both sides
08:00 Tue07:00 TueOff-hours both sides
09:00 Tue08:00 TueIRST working
10:00 Tue09:00 TueBoth at work
11:00 Tue10:00 TueBoth at work
12:00 Tue11:00 TueBoth at work
13:00 Tue12:00 TueBoth at work
14:00 Tue13:00 TueBoth at work
15:00 Tue14:00 TueBoth at work
16:00 Tue15:00 TueBoth at work
17:00 Tue16:00 TueUTC working
18:00 Tue17:00 TueOff-hours both sides
19:00 Tue18:00 TueOff-hours both sides
20:00 Tue19:00 TueOff-hours both sides
21:00 Tue20:00 TueOff-hours both sides
22:00 Tue21:00 TueOff-hours both sides
23:00 Tue22:00 TueOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Irish Standard Time (IRST)
IANA identifier
Europe/Dublin
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
Dublin
Coordinated Universal Time (UTC)
IANA identifier
UTC
Current UTC offset
UTC+00:00
Current abbreviation
UTC
Major cities in this zone
UTC

Related converters

UTC to IRST (reverse)IRST to ESTIRST to PSTIRST to GMTIRST to CETIRST to ISTEST to UTCPST to UTCGMT to UTCCET to UTCIST to UTC
Looking for local time? See time in Dublin or time in UTC.

Frequently asked questions

What is the time difference between IRST and UTC right now?+
UTC (Coordinated Universal Time) is currently 1 hour behind IRST (Irish Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does IRST or UTC observe daylight saving time?+
IRST: observes daylight saving time. UTC: does not observe daylight saving time.
When is the best time to schedule a meeting between IRST and UTC?+
The strongest overlap is 10:00–16:00 IRST (09:00–15:00 UTC), giving 7 hours when both sides are within standard 9am-5pm working hours.
What time is it in UTC when it is 12:00 noon in Dublin?+
When it is 12:00 Tue in Dublin (IRST), it is 11:00 Tue in UTC (UTC).
Which IANA time zone identifiers are used for IRST and UTC?+
IRST maps to "Europe/Dublin" in the IANA database. UTC maps to "UTC". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Dublin ahead of or behind UTC?+
Whether Dublin (IRST) is ahead of or behind UTC (UTC) depends on the current UTC offsets. Right now UTC is 1 hour behind IRST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for IRST and UTC?+
IRST is UTC+01:00 (GMT+1) and UTC is UTC+00:00 (UTC). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both IRST and UTC?+
Yes. There are 7 hours of overlap during standard 9am-5pm working hours, with the strongest window at 10:00–16:00 IRST.