Ireland has one time zone and always matches the UK. Its summer time is legally called Irish Standard Time (IST, UTC+1), and in winter it uses GMT. Do not confuse this IST with India Standard Time (UTC+5:30).
Current time in Ireland's cities
| City | Time now | Zone |
|---|---|---|
| Dublin | 11:50 | IST (UTC+1) |
Time zones in Ireland
The IANA time zone database lists 1 zone for Ireland. Each has its own entry because its clock history differs, even where the current time is the same. The offsets below are for mid-January and mid-July 2027.
| IANA zone | Area | January 2027 | July 2027 |
|---|---|---|---|
Europe/Dublin | Whole country | GMT (UTC+0) | IST (UTC+1) |
Clock changes in Ireland in 2026 and 2027
Europe/Dublin:
- Sunday 29 March 2026: at 01:00 clocks go forward to 02:00. GMT (UTC+0) becomes IST (UTC+1), and the hour in between is skipped.
- Sunday 25 October 2026: at 02:00 clocks go back to 01:00. IST (UTC+1) becomes GMT (UTC+0), and the hour from 01:00 happens twice.
- Sunday 28 March 2027: at 01:00 clocks go forward to 02:00. GMT (UTC+0) becomes IST (UTC+1), and the hour in between is skipped.
- Sunday 31 October 2027: at 02:00 clocks go back to 01:00. IST (UTC+1) becomes GMT (UTC+0), and the hour from 01:00 happens twice.
Time difference between Ireland and major cities
How far each city is ahead of or behind Ireland, and how the gap changes when either side changes its clocks between now and the end of 2027.
| City | Now | Through 2026 and 2027 |
|---|---|---|
| London | same time | same time all year |
| New York | 5 hours behind | 5 hours behind until 25 Oct 2026; 4 hours behind 25 Oct 2026 to 1 Nov 2026; 5 hours behind 1 Nov 2026 to 14 Mar 2027; 4 hours behind 14 Mar 2027 to 28 Mar 2027; 5 hours behind 28 Mar 2027 to 31 Oct 2027; 4 hours behind 31 Oct 2027 to 7 Nov 2027; 5 hours behind from 7 Nov 2027 |
| Los Angeles | 8 hours behind | 8 hours behind until 25 Oct 2026; 7 hours behind 25 Oct 2026 to 1 Nov 2026; 8 hours behind 1 Nov 2026 to 14 Mar 2027; 7 hours behind 14 Mar 2027 to 28 Mar 2027; 8 hours behind 28 Mar 2027 to 31 Oct 2027; 7 hours behind 31 Oct 2027 to 7 Nov 2027; 8 hours behind from 7 Nov 2027 |
| Dubai | 3 hours ahead | 3 hours ahead until 25 Oct 2026; 4 hours ahead 25 Oct 2026 to 28 Mar 2027; 3 hours ahead 28 Mar 2027 to 31 Oct 2027; 4 hours ahead from 31 Oct 2027 |
| Mumbai | 4½ hours ahead | 4½ hours ahead until 25 Oct 2026; 5½ hours ahead 25 Oct 2026 to 28 Mar 2027; 4½ hours ahead 28 Mar 2027 to 31 Oct 2027; 5½ hours ahead from 31 Oct 2027 |
| Singapore | 7 hours ahead | 7 hours ahead until 25 Oct 2026; 8 hours ahead 25 Oct 2026 to 28 Mar 2027; 7 hours ahead 28 Mar 2027 to 31 Oct 2027; 8 hours ahead from 31 Oct 2027 |
| Tokyo | 8 hours ahead | 8 hours ahead until 25 Oct 2026; 9 hours ahead 25 Oct 2026 to 28 Mar 2027; 8 hours ahead 28 Mar 2027 to 31 Oct 2027; 9 hours ahead from 31 Oct 2027 |
| Sydney | 10 hours ahead | 10 hours ahead until 25 Oct 2026; 11 hours ahead 25 Oct 2026 to 28 Mar 2027; 10 hours ahead 28 Mar 2027 to 4 Apr 2027; 9 hours ahead 4 Apr 2027 to 3 Oct 2027; 10 hours ahead 3 Oct 2027 to 31 Oct 2027; 11 hours ahead from 31 Oct 2027 |