Convert IST to ET
India Standard Time (IST) to Eastern Time (ET)
Indian IT services, BPO operations, and offshore development teams in Bangalore, Hyderabad, Chennai, and Pune convert IST to EST daily for client calls, sprint demos, and production support handoffs. The 10.5-hour gap means Indian evening hours overlap with the US East Coast morning -- the critical window for real-time collaboration with New York, Boston, and Washington DC offices.
When it's 12:00 PM in Mumbai, it's 2:30 AM in New York
On Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: 1:30 AM in New York.
Interactive Converter
Pick any time and date to convert between IST and ET.
IST to ET Conversion Table
Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.
| Mumbai (IST) | New York (ET) |
|---|---|
| 12:00 AM | 2:30 PM -1 day |
| 1:00 AM | 3:30 PM -1 day |
| 2:00 AM | 4:30 PM -1 day |
| 3:00 AM | 5:30 PM -1 day |
| 4:00 AM | 6:30 PM -1 day |
| 5:00 AM | 7:30 PM -1 day |
| 6:00 AM | 8:30 PM -1 day |
| 7:00 AM | 9:30 PM -1 day |
| 8:00 AM | 10:30 PM -1 day |
| 9:00 AM | 11:30 PM -1 day |
| 10:00 AM | 12:30 AM |
| 11:00 AM | 1:30 AM |
| 12:00 PM | 2:30 AM |
| 1:00 PM | 3:30 AM |
| 2:00 PM | 4:30 AM |
| 3:00 PM | 5:30 AM |
| 4:00 PM | 6:30 AM |
| 5:00 PM | 7:30 AM |
| 6:00 PM | 8:30 AM |
| 7:00 PM | 9:30 AM |
| 8:00 PM | 10:30 AM |
| 9:00 PM | 11:30 AM |
| 10:00 PM | 12:30 PM |
| 11:00 PM | 1:30 PM |
These times apply on all dates in 2026–2027 except:
- Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: New York times are 1 hour earlier.
Best Meeting Window
Top meeting times for teams in IST and ET (9 AM -- 6 PM work hours, 1-hour meeting).
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for Mumbai.
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for New York.
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for New York.
These times apply on all dates in 2026–2027 except:
- Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: New York times are 1 hour earlier.
Scheduling Tips
- Block 6:30-9:30 PM IST for US client calls. This is the only reliable overlap with US East Coast mornings.
- During EDT (March-November), you gain an extra hour of overlap. Shift recurring calls 30 minutes earlier in IST to take advantage of the shorter gap.
- For async handoffs, post end-of-day summaries by 7:00 PM IST so US teams see them first thing at 8:30 AM EST.
Time Difference & DST
The IST to ET gap is -10:30h or -9:30h, depending on daylight saving time. The table lists each period.
| Dates | Mumbai | New York | Difference |
|---|---|---|---|
| Jan 1 – Mar 7, 2026 | UTC+5:30 | UTC-5 | -10:30h |
| Mar 8 – Oct 31, 2026 | UTC+5:30 | UTC-4 | -9:30h |
| Nov 1, 2026 – Mar 13, 2027 | UTC+5:30 | UTC-5 | -10:30h |
| Mar 14 – Nov 6, 2027 | UTC+5:30 | UTC-4 | -9:30h |
| Nov 7 – Dec 31, 2027 | UTC+5:30 | UTC-5 | -10:30h |
Mumbai does not use daylight saving time.
Use the interactive converter for a specific date.
Major Cities
India Standard Time (IST)
- Mumbai
- Delhi
- Bangalore
Eastern Time (ET)
- New York
- Miami
- Atlanta
Frequently Asked Questions
What is the time difference between IST and EST?
What is 9:00 AM IST in US Eastern Time?
When is the best time for a call from India to the US East Coast?
Does the IST to EST time difference change during the year?
Related Guides
Find the ideal overlap window for US–India calls. Covers EST, CST, MST, and PST to IST with work-hour recommendations.
Scheduling Across Time Zones: Best Practices for Global TeamsProven strategies for scheduling meetings across multiple time zones. Reduce late-night calls and improve team fairness.
How US Daylight Saving Time Affects International Team CallsUnderstand how US spring-forward and fall-back shifts change meeting times with Europe, India, and Asia-Pacific teams.
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