Dublin to IST
Dublin is 4 hours and 30 minutes behind India Standard Time.
Times may vary due to daylight saving time.Quick answer. IST is 5 hours and 30 minutes ahead of Dublin for part of the year and 4 hours and 30 minutes ahead for the rest, because Dublin observes daylight saving time and the other side does not. The gap is 5 hours and 30 minutes during Dublin's standard-time months and 4 hours and 30 minutes during daylight time, so always convert against a specific date.
Time difference
Dublin, Ireland
GMT UTC+0:00 IST UTC+1:00 Observes DST
Dublin and the rest of Ireland.
- ↑ March 29, 2026 clocks forward at 2:00 AM · UTC+0:00 → UTC+1:00
- ↓ October 25, 2026 clocks back at 1:00 AM · UTC+1:00 → UTC+0:00
India Standard Time (IST)
IST UTC+5:30 No DST
Mumbai, Delhi, Bengaluru, Chennai, Kolkata, Hyderabad.
India runs on a single time zone, UTC+5:30, and has not observed daylight saving time since 1945. The half-hour offset is why IST conversions rarely land on a round hour.
Dublin to IST conversion table
Every hour of the day for 2026. Because Dublin changes clocks twice a year, these values shift by an hour across the daylight saving boundary — use the date picker above for a specific day.
| Dublin | IST | 24-hour |
|---|---|---|
| 12 AM | 4:30 AM | 04:30 |
| 1 AM | 5:30 AM | 05:30 |
| 2 AM | 6:30 AM | 06:30 |
| 3 AM | 7:30 AM | 07:30 |
| 4 AM | 8:30 AM | 08:30 |
| 5 AM | 9:30 AM | 09:30 |
| 6 AM | 10:30 AM | 10:30 |
| 7 AM | 11:30 AM | 11:30 |
| 8 AM | 12:30 PM | 12:30 |
| 9 AM | 1:30 PM | 13:30 |
| 10 AM | 2:30 PM | 14:30 |
| 11 AM | 3:30 PM | 15:30 |
| 12 PM | 4:30 PM | 16:30 |
| 1 PM | 5:30 PM | 17:30 |
| 2 PM | 6:30 PM | 18:30 |
| 3 PM | 7:30 PM | 19:30 |
| 4 PM | 8:30 PM | 20:30 |
| 5 PM | 9:30 PM | 21:30 |
| 6 PM | 10:30 PM | 22:30 |
| 7 PM | 11:30 PM | 23:30 |
| 8 PM | 12:30 AM +1 day | 00:30 |
| 9 PM | 1:30 AM +1 day | 01:30 |
| 10 PM | 2:30 AM +1 day | 02:30 |
| 11 PM | 3:30 AM +1 day | 03:30 |
Highlighted rows are the 4 hours where a 9–6 working day in Dublin overlaps a 9–5 working day in IST.
Popular conversion times
| Dublin | IST |
|---|---|
| 9 AM Dublin | 1:30 PM |
| 10 AM Dublin | 2:30 PM |
| 11 AM Dublin | 3:30 PM |
| 12 PM Dublin | 4:30 PM |
| 3 PM Dublin | 7:30 PM |
| 5 PM Dublin | 9:30 PM |
| 6 PM Dublin | 10:30 PM |
| 8 PM Dublin | 12:30 AM+1 day |
Business hours and meeting times
Comparing a 9:00–18:00 working day in Dublin against 9:00–17:00 in IST, across the whole week — a slot only counts if it lands on a working day at both ends.
Both sides work Monday to Friday, so the working weeks line up and you share 5 days.
Rows are days in Dublin. Columns are hours of the Dublin day.
Best recurring slot
11 AM Dublin = 3:30 PM IST , every shared working day
Across the week that is 15 overlapping working hours . The widest day is Monday, with 3 hours.
| Day | Overlap (Dublin) | Local (IST) | Hours |
|---|---|---|---|
| Monday | 9 AM – 12 PM | 1:30 PM – 4:30 PM | 3 |
| Tuesday | 9 AM – 12 PM | 1:30 PM – 4:30 PM | 3 |
| Wednesday | 9 AM – 12 PM | 1:30 PM – 4:30 PM | 3 |
| Thursday | 9 AM – 12 PM | 1:30 PM – 4:30 PM | 3 |
| Friday | 9 AM – 12 PM | 1:30 PM – 4:30 PM | 3 |
| Saturday | Dublin weekend | — | — |
| Sunday | Dublin weekend | — | — |
Public holidays
A shared working day is only usable if neither side is on holiday — and India and IST build their calendars on different systems, so the days each loses rarely coincide.
Over the next 8 weeks you share 40 working days. 3are lost to a public holiday on one side or the other, leaving 37.
| Date | Who is off | Holiday |
|---|---|---|
| Friday, October 2, 2026 | India | Gandhi Jayanti |
| Tuesday, October 20, 2026 | India | Dussehra (Vijayadashami) |
| Monday, October 26, 2026 | Dublin | October Holiday (Lá Saoire i mí Dheireadh Fómhair) |
Next holidays in Dublin
- Monday, October 26, 2026October Holiday (Lá Saoire i mí Dheireadh Fómhair)published date
- Friday, December 25, 2026Christmas Day (Lá Nollag)published date
- Saturday, December 26, 2026St. Stephen's Day (Lá Fhéile Stiofáin)published date
- Friday, January 1, 2027New Year's Day (Lá Caille)published date
- Monday, February 1, 2027Saint Brigid's Day (Lá Fhéile Bríde)published date
Public holidays as published by https://date.nager.at, covering 2026–2028. Regional and employer-specific days are not included.
Next holidays in India
- Friday, October 2, 2026Gandhi Jayantisame date every year
- Tuesday, October 20, 2026Dussehra (Vijayadashami)partialpublished date
- Sunday, November 8, 2026Diwalipublished date
- Monday, November 9, 2026Diwalipublished date
- Friday, December 25, 2026Christmas Daypartialsame date every year
India has three national holidays on which the whole country closes. Everything else is either a central-government gazetted holiday that individual employers choose to observe, or a state holiday. Festival dates follow lunisolar calendars and move every year, so they are listed explicitly rather than derived.
Holiday dates for Dublin and elsewhere come from a dataset last refreshed on 2026-09-12 (date.nager.at plus curated national calendars). Lunar dates — Eid, Chinese New Year, the Jewish holidays — are predicted and can move by a day once officially announced. Regional, state and employer-specific holidays are not included. Confirm anything you are booking a flight around.
About this conversion
India runs on a single time zone, UTC+5:30, and has not observed daylight saving time since 1945. The half-hour offset is why IST conversions rarely land on a round hour.
Frequently asked questions
What is the time difference between Dublin and IST?
It depends on the date. IST is 5 hours and 30 minutes ahead of Dublin in January and 4 hours and 30 minutes ahead in July, because Dublin changes clocks for daylight saving time. Use the converter above with the date you actually need.
What time is 9 AM Dublin in IST?
9:00 AM Dublin is 2:30 PM in IST during IST, and 1:30 PM during daylight time. The table on this page lists all 24 hours for the date you pick.
What is the best time for a meeting between Dublin and IST?
Working days overlap for about 3 hours on a typical Monday: 9 AM to 12 PM Dublin, which is 1:30 PM to 4:30 PM in IST. For a recurring invite, 11 AM Dublin / 3:30 PM IST is the slot that works on the most days.
Does Dublin observe daylight saving time?
Yes. Dublin alternates between GMT (UTC+0:00) and IST (UTC+1:00). In 2026, clocks in Dublin go forward on March 29, 2026 and back on October 25, 2026. India does not shift at all, so the gap between the two moves twice a year.
When do the clocks change in Dublin?
In 2026, clocks in Dublin go forward on March 29, 2026 and back on October 25, 2026. Between those dates the gap from India is 4 hours and 30 minutes; outside them it is 5 hours and 30 minutes.
Why does the Dublin–IST difference change during the year?
Because Dublin switches between GMT (UTC+0:00) and IST (UTC+1:00) for daylight saving, while the other side does not move. A converter that assumes one fixed gap will be an hour wrong for roughly half the year.
How many hours a week do Dublin and IST actually overlap?
15 hours across the week, spread over 5 working days. 11 AM Dublin (3:30 PM IST) is the slot that works on the most days, so it is the one to put in a recurring invite.
Do public holidays in Dublin and IST line up?
Barely. Over the next eight weeks the two sides share 40 working days, and 3 of those are a public holiday on one side or the other, leaving 37. The next holiday in IST is Gandhi Jayanti on 2026-10-02. Indian, Gulf and Western holiday calendars are built on different systems, so the days each side loses rarely coincide.
Is Dublin ahead of IST?
No, it is the other way around: IST is ahead of Dublin by 4 hours and 30 minutes to 5 hours and 30 minutes.
Converting the other way
Looking up times starting from IST? Use the IST to Dublin converter, which leads with IST as the starting point and is written for that reader.
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