MeetingHours

IST to EST

New York is 9½ hours behind New Delhi at the moment — this pair shifts across the year.

IST now EST now Network measuring…

IST and EST across the year

The difference is not a single number. In July, New York is 9½ hours behind New Delhi; in January it is 10½ hours behind. That 1 hour swing happens because the two zones do not change their clocks together — and it is why a recurring meeting set once will quietly move for one side after a changeover.

IST: IST means India Standard Time (UTC+5:30), Irish Standard Time (UTC+1) and Israel Standard Time (UTC+2). This page uses India, which is what the overwhelming majority of searches intend. India does not observe daylight saving, so the offset never changes.

EST: Eastern Time is EDT (UTC−4) in summer and EST (UTC−5) in winter. The figures here follow the current rule rather than assuming winter.

IST to EST at a glance

Working-hours conversions, using the July relationship. The live converter above always reflects today.

IST — New DelhiEST — New York
8:00 am10:30 pm (previous day)
9:00 am11:30 pm (previous day)
10:00 am12:30 am
11:00 am1:30 am
12:00 pm2:30 am
1:00 pm3:30 am
2:00 pm4:30 am
3:00 pm5:30 am
4:00 pm6:30 am
5:00 pm7:30 am

Scheduling between New Delhi and New York

There is no overlap at all — no hour exists in which both New Delhi and New York are inside a 9am–6pm day. With 9½ hours between them, that is arithmetic rather than bad luck, and no amount of careful scheduling produces a slot that suits both.

The least-bad compromise is 5:00 pm in New Delhi, which is 7:30 am in New York. That asks less of New Delhi than of New York, who would be up before their working day starts. Every alternative is worse for one side than this one is for either.

The better answer, where the work allows it, is to stop meeting synchronously and use the gap deliberately. When New Delhi finishes at 5:00 pm, it is 7:30 am in New York — right at the start of their day, which is close to a perfect handover: what you write at close of business is the first thing on their desk. Going the other way, New York's 5:00 pm is 2:30 am for you.

Used properly that is close to twenty-four hour coverage rather than an obstacle: two working days per calendar day, provided each side ends by writing down where things stand. Reserve live calls for what genuinely needs a conversation, and alternate who takes the 5:00 pm slot when they do.

If you are the one in New Delhi

New York is behind you, so you get the day first. When you start at 9:00 am, it is 11:30 pm there and they are only just starting — which makes your morning the wrong time to expect an answer and your afternoon the right one. The upside of being ahead is that you can set the agenda: what you finish today lands on their desk at the start of their day, not the end of it.

So the discipline that pays off is writing things down before you finish. What you leave at the end of your day becomes their morning's work, and a clear handover buys you an entire working day of progress without a single meeting. What you leave vague costs you the same day waiting for a clarification.

If this is a recurring meeting, create it with real time zones — a calendar invitation tied to "New Delhi" rather than to a fixed offset. Both zones' changeovers then take care of themselves. An invitation created as a bare UTC offset will drift by an hour twice a year and nobody will notice until somebody misses a call.

Related conversions

PST → ESTEST → PSTCST → ESTEST → CSTMST → ESTEST → GMTGMT → ESTEST → CET

Plan across more than two cities at once →

Questions

What time is IST in EST?
EST is 9½ hours behind IST in July, and 10½ hours behind it in January — the gap changes across the year because at least one of the two observes daylight saving. The converter above uses whichever relationship applies today.
Is the difference between IST and EST the same all year?
No. It is 9½ hours in July and 10½ hours in January. If you are scheduling something recurring — a weekly call, a standing meeting — it will drift by an hour at each daylight-saving changeover unless the invitation was created with real time zones rather than a fixed offset.
What is the best time to schedule a call between New Delhi and New York?
There is no slot that suits both. The least-bad option is 5:00 pm in New Delhi, which lands at 7:30 am in New York — New York takes the inconvenience there. Anything closer to the middle of one city's day pushes the other further into the night.
Does IST mean something else?
IST means India Standard Time (UTC+5:30), Irish Standard Time (UTC+1) and Israel Standard Time (UTC+2). This page uses India, which is what the overwhelming majority of searches intend. India does not observe daylight saving, so the offset never changes.