Meeting time

Best time to meet: Boston and Chennai

Boston is 10 hours 30 minutes behind Chennai right now, so their working days do not overlap. The time that asks least of both is 7:30 AM in Boston, which is 6 PM in Chennai — one of you starts early or stays late.

Tue 10:55 AMBoston · Eastern Standard TimeTue 9:25 PMChennai · India Standard Time
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Hour by hour

With the clocks as they are on November 10, 2026, Boston time on the left. A working day here is 9 AM to 5 PM.

BostonChennai
6 AM4:30 PMChennai at work
7 AM5:30 PMBoth off
8 AM6:30 PMBoth off
9 AM7:30 PMBoston at work
10 AM8:30 PMBoston at work
11 AM9:30 PMBoston at work
12 PM10:30 PMBoston at work
1 PM11:30 PMBoston at work
2 PM12:30 AM next dayBoston at work
3 PM1:30 AM next dayBoston at work
4 PM2:30 AM next dayBoston at work
5 PM3:30 AM next dayBoth off
6 PM4:30 AM next dayBoth off
7 PM5:30 AM next dayBoth off
8 PM6:30 AM next dayBoth off
9 PM7:30 AM next dayBoth off
10 PM8:30 AM next dayBoth off

When the clocks change

The gap moves when either city changes its clocks. The next twelve months:

DatesBoston isBoth at work (Boston time)Easiest (Boston / Chennai)
Now to March 14, 202710 hours 30 minutes behindNone7:30 AM / 6 PM
March 14, 2027 to November 7, 2027
clocks in Boston go forward		9 hours 30 minutes behindNone8 AM / 5:30 PM
November 7, 2027 onward
clocks in Boston go back		10 hours 30 minutes behindNone7:30 AM / 6 PM

Boston keeps the same clock as New York; Chennai keeps the same clock as Bangalore.

Questions people ask

What time is it in Chennai when it is 9 AM in Boston?
7:30 PM in Chennai, while Boston is 10 hours 30 minutes behind.
When is the best time for a call between Boston and Chennai?
7:30 AM in Boston, which is 6 PM in Chennai. Their working days do not overlap, so this is the fairest time for both.
Does the time difference between Boston and Chennai change during the year?
Yes — it changes 2 times in the next twelve months, when the clocks go forward or back; the dates are in the table above.

More cities

London and Boston3 hours of shared working day · meet at 3 PM London timeSan Francisco and Boston5 hours of shared working day · meet at 10:30 AM San Francisco timeLos Angeles and Boston5 hours of shared working day · meet at 10:30 AM Los Angeles timeBangalore and BostonNo shared working hours · fairest at 6 PM Bangalore timeSingapore and BostonNo shared working hours · fairest at 7 AM Singapore timeSydney and BostonNo shared working hours · fairest at 8:30 AM Sydney timeTokyo and BostonNo shared working hours · fairest at 7:30 AM Tokyo timeBerlin and Boston2 hours of shared working day · meet at 4 PM Berlin timeParis and Boston2 hours of shared working day · meet at 4 PM Paris timeChicago and Boston7 hours of shared working day · meet at 10 AM Chicago timeDubai and BostonNo shared working hours · fairest at 5 PM Dubai timeMumbai and BostonNo shared working hours · fairest at 6 PM Mumbai time

Every city from Boston · Every city from Chennai · All cities · Plan across more than two cities

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