Best Time to Call India from the US
IST is 10 hours 30 minutes ahead of EST in winter and 9 hours 30 minutes ahead in summer. Here are the specific time slots that keep both sides within normal waking hours.
Quick Reference: India-US Overlap Windows
The green shaded rows are the recommended "sweet spot" for scheduling. India standard business hours are 9:00 AM to 6:00 PM IST.
India to New York (IST to EST/EDT)
New York is the most common US city for India-based teams to coordinate with. The time difference shifts by one hour when the US enters daylight saving time in March.
Winter (Nov to Mar): EST
IST is 10 hours 30 minutes ahead of EST
- 9:00 AM EST = 7:30 PM IST
- 9:30 AM EST = 8:00 PM IST
- 10:00 AM EST = 8:30 PM IST
- 10:30 AM EST = 9:00 PM IST
- 11:00 AM EST = 9:30 PM IST
Summer (Mar to Nov): EDT
IST is 9 hours 30 minutes ahead of EDT
- 9:00 AM EDT = 6:30 PM IST
- 9:30 AM EDT = 7:00 PM IST
- 10:00 AM EDT = 7:30 PM IST
- 10:30 AM EDT = 8:00 PM IST
- 12:00 PM EDT = 9:30 PM IST
Best window for India-New York calls
Schedule between 8:30 AM and 11:00 AM EST/EDT (winter/summer respectively). In IST this is roughly 7:00 PM to 9:30 PM, which is after India's workday but still a reasonable evening hour. Avoid anything past 11:30 PM IST since it encroaches on midnight in India.
Use the IST to EST converter to confirm exact times for any specific meeting, including DST transitions.
India to Chicago (IST to CST/CDT)
Chicago is one hour behind New York. This makes morning calls slightly earlier on the US side, but the India-facing window stays the same.
Winter (Nov to Mar): CST
IST is 11 hours 30 minutes ahead of CST
- 8:00 AM CST = 7:30 PM IST
- 8:30 AM CST = 8:00 PM IST
- 9:00 AM CST = 8:30 PM IST
- 9:30 AM CST = 9:00 PM IST
- 10:00 AM CST = 9:30 PM IST
Summer (Mar to Nov): CDT
IST is 10 hours 30 minutes ahead of CDT
- 9:00 AM CDT = 7:30 PM IST
- 9:30 AM CDT = 8:00 PM IST
- 10:00 AM CDT = 8:30 PM IST
- 10:30 AM CDT = 9:00 PM IST
- 11:00 AM CDT = 9:30 PM IST
India to Los Angeles (IST to PST/PDT) - The Hard Case
Los Angeles is the most difficult US city for India to coordinate with. The 13.5-hour gap in winter means there is almost no overlap during standard business hours on either side.
Limited overlap: what actually works
- 8:30 AM - 9:30 AM PST = 10:00 PM - 11:00 PM IST (late night for India)
- 7:30 AM - 8:30 AM PST = 9:00 PM - 10:00 PM IST (evening for India, very early for PST)
For regular India-LA calls, one side will need to accommodate. Most teams rotate the sacrifice or schedule the weekly sync at 8:30 AM PST / 10:00 PM IST.
Use the IST to PST converter to check exact times around the US daylight saving transitions.
The 3 AM Trap: Mistakes to Avoid
India-US scheduling mistakes are almost always caused by forgetting one of these three things:
1. Forgetting DST changes the gap by one hour
When the US enters daylight saving time in March, the gap shrinks by one hour. A 9:30 AM EST meeting becomes a 9:30 AM EDT meeting, but now IST is only 9.5 hours ahead instead of 10.5. The India side arrives 30 minutes late if no one updates the invite.
2. Scheduling at 9:00 AM PST without realizing that is 10:30 PM IST
A 9 AM start in Los Angeles is 10:30 PM in India (summer) or 10:30 PM (winter). That is technically the same evening, but an hour before midnight is pushing it for a regular recurring meeting. Many India-based employees will mute themselves and stop engaging after 10:30 PM IST.
3. Using "EST" year-round when New York actually uses EDT in summer
EST (UTC-5) and EDT (UTC-4) are not the same. New York is on EST from November to March and on EDT from March to November. Calendar invites set to "Eastern Time" will auto-adjust, but manually entered times will not. Always double-check during the March and November transition weeks.
Full Conversion Table: IST to All US Time Zones
Reference table for common IST times converted to all four US mainland time zones. Times shown are for the standard (winter) offset. During US daylight saving (March to November), each US column moves one hour later.
Green rows are within comfortable business hours for both sides. Red IST time (11:30 PM) is too late for India. During US daylight saving (Mar to Nov), add 1 hour to all US columns.
Frequently Asked Questions
What is the time difference between India and the US East Coast right now?
During US standard time (November to March), IST is 10 hours and 30 minutes ahead of EST. During US daylight saving time (March to November), IST is 9 hours and 30 minutes ahead of EDT. India does not change its clocks, so the gap shifts only when the US does.
What is the best time for an India-US work call?
The sweet spot is 8:00 AM to 11:00 AM Eastern Time (US winter) or 9:00 AM to 12:00 PM Eastern Time (US summer). In IST, this corresponds to roughly 6:30 PM to 9:30 PM, which is a reasonable evening for India-based participants.
Can I schedule a call that is within business hours for both India and California?
Not really. IST is 13 hours 30 minutes ahead of PST in winter (12 hours 30 minutes in summer PDT). For California to be at 9:00 AM, India would be at 10:30 PM the same day. There is no overlap window that falls within 9 AM to 5 PM for both locations simultaneously.
Does India observe daylight saving time?
No. India Standard Time (IST, UTC+5:30) does not change for daylight saving time. IST remains at UTC+5:30 throughout the entire year. This means the India-US time gap changes twice a year as the US moves into and out of daylight saving, even though India's clocks never change.
When does the US change its clocks in 2026?
In 2026, the US moves forward to daylight saving time on Sunday, March 8 at 2:00 AM (clocks move to 3:00 AM). The US returns to standard time on Sunday, November 1 at 2:00 AM (clocks move back to 1:00 AM). This affects the India-US gap by one hour on both of those dates.
Convert Any IST Time Right Now
Use our free converter to check the exact time in New York, Chicago, Los Angeles or any other US city for any IST time you need.
Managing a distributed US/India team? Read our Remote Work Timezone Guide for overlap windows, the three-way US/UK/India sweet spot, and how March DST gaps affect recurring meetings.