Convert EST to IST time zone

In the graph below you see the time zone difference between Eastern Standard Time and Indian Standard Time. Drag the bubble to adjust the time and to see the corresponding time in the other time zone.

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Tips for converting EST to IST

Eastern Standard Time is the time zone of the Canadian and US East Coast, including cities like Montreal, Ottawa, New York, Washington D.C. and Miami. Indian Standard Time is the time zone of India, Sri Lanka, with places like New Delhi, Mumbai, Bangalore, Kolkata and Colombo.

When is the best time to schedule a meeting with EST and IST?

Usually it is preferable to schedule meetings in the early morning, or late evening for the person in EST and in the evening, or early morning for the person in IST.

Other common time zone conversions

More EST conversions

More IST conversions

When is the best time to schedule a meeting between Eastern Standard Time (EST) and Indian Standard Time (IST)?

In our global world a lot more people are communicating across time zones. Intra-company video conferences, travelers Skyping their moms, outsourced contractors checking back with their clients and digital nomads all face the issue of managing and mastering time zones.

With an ever increasing number of links between India and the Eastern US, more and more people are finding the need to convert EST to IST and finding a mutually suitable time.

This can be a bit tricky as the time difference between someone who is in New York (EST) for example and someone in India (IST) is a full nine and a half hours. This typically means that the person who is in the United States will have to take the call quite early in the morning as 9AM is already 6.30PM in India by that time.

Even though the most agreeable time is to try and schedule the meeting in the evening Indian time, some people prefer to get up bright and early instead. For these two time zone pairs that however requires the American counterpart to be willing to take a call in the evening as 7AM in India is already 9.30PM in places like Washington, Miami and Toronto. It is then important to remember that the person in India is actually a day ahead – so make sure to double check this when entering the details into your meeting calendar!

If you are an exchange student calling home from India it works to schedule the call both after school (as it is early in the morning in the United States), or before school if you are the morning type of person.


Indian Standard Time, or IST for short, is the timezone of the Indian subcontinent. It is 3.5h ahead of GMT – so when the clock is 12 noon in India it is 8.30 in the morning in Delhi and Mumbai.

Countries using IST:

India, Sri Lanka

Example of cities observing it:

Delhi, Colombo, Kolkata and Mumbai

Summer time and Daylight saving time:

This timezone does not observe daylight saving time so the time difference always stay the same. You however need to pay attention to if the other time zone is observing DST as this will make a difference.


IST can also refer to Irish Standard Time or Israeli Standard time, but most of the times it is India that is being referred to – just make sure to double check this before you send that calendar invite!


Eastern Standard Time, abbreviated as EST, is the time zone of the Eastern seaboard of both the US and Canada. It is 4 hours behind Greenwhich Mean Time, so when the clock is 12 noon in places like San Francisco it is 4PM in London at the zero meridien.

Countries using EST:

Eastern US and Canada, with the exception of the easternmost part of Canada. The Dominican Republic also applies EST.

Example of cities:

Some of the main cities observing EST is New York, Washington, Toronto, Montreal and Miami as well as several Central American countries

Daylight saving time and summer time:

In the summer, EST is known as EDT or Eastern Daylight Time. Between March and November EDT is in use, moving the clocks ahead one hour compared to in the winter time. Just pay attention to your own timezone as it may also observe DST!


In Spanish it is known as ET – Tiempo del Este and in French HNE – Heure Normale de l'Est.