India and Ireland Working Hours Overlap in IST
Ireland · Europe
24-Hour Timeline
Overlap for Different Work Hours
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| Ireland Hours | Overlap (IST) | Local Time | Duration |
|---|---|---|---|
| 8:00 AM – 5:00 PM | 1:30 PM – 6:00 PM IST | 8:00 AM – 12:30 PM | 4.5 hrs |
| 9:00 AM – 6:00 PM | 2:30 PM – 6:00 PM IST | 9:00 AM – 12:30 PM | 3.5 hrs |
| 10:00 AM – 7:00 PM | 3:30 PM – 6:00 PM IST | 10:00 AM – 12:30 PM | 2.5 hrs |
Ireland observes daylight saving time. Clocks change twice yearly: Ireland follows EU rules (same as UK). GMT (UTC+0) Oct–Mar; IST (UTC+1) Mar–Oct — NOTE confusing: Ireland uses 'IST' for summer but means Irish Standard Time, not Indian Standard Time!
Your overlap window shifts by 1 hour twice yearly when clocks change.
Note: Work week is Mon–Fri
About This Overlap
Ireland is Western Europe's tech hub and home to massive US tech companies (Google, Apple, Meta, Microsoft have large Irish offices). IST is 5h 30m ahead in winter (GMT) and 4h 30m ahead in summer (IST/Irish Summer Time — confusing terminology!). Dublin is a major tech centre. India–Ireland ties include pharma (Indian generic drugs), IT services, and tech partnerships. Same offset as UK (GMT/IST confusion aside).
Last updated: 20 March 2026
Frequently Asked Questions
When do India and Ireland share working hours?
Overlap: 2:30 PM – 6:00 PM IST — 3.5 hours
How many hours overlap does IST have with Ireland?
Indian Standard Time (IST, UTC+5:30) and Ireland have a 3.5-hour overlap window. The exact span depends on daylight saving time in Ireland.
What is the best time to schedule a call between India and Ireland?
Schedule calls between 2:30 PM and 6:00 PM IST (9:00 AM–12:30 PM Ireland local time). This ensures both parties are within business hours.
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