Best Time to Call India from the USA and UK

Updated November 2026 · 6 min read

India is roughly half a day ahead of the US, and its half-hour offset (UTC+05:30) means the numbers never line up neatly. Get the sum wrong and you're ringing someone at 2 AM. The tables below do the maths for you, and the notes after them explain why the good hours shift twice a year.

How far ahead India is

India (IST) never changes its clocks. The US and the UK do, so the gap moves twice a year:

"Summer" here means mid-July and "winter" means mid-January. In between there are a few weeks when the US and the UK have changed their clocks on different dates, and the gap can be an hour off again; how daylight saving time works has the exact dates.

Your morning, their clock

Most people want to call during their own morning or lunch break while the person in India is still at work, or at least still awake. This is what each local time turns into in India.

What works from each place

From the UK

Of the three, the UK has it easiest, because India's working afternoon lines up with the UK's morning and lunchtime. Ring between about 9:00 AM and 1:00 PM in London and you'll catch India somewhere between early afternoon and early evening (the table has the exact times). Leave it past 2:00 PM and it's already evening or night over there.

From the US East Coast

Here's the awkward part: no hour sits in the middle of a working day for both of you. The usual compromise is that you call early (8:00 to 10:00 AM in New York), which lands at roughly 5:30 PM to 7:30 PM in India in summer and 6:30 PM to 8:30 PM in winter. For most people in India that's after work but well before bed, which is about as good as it gets.

From Chicago and the West Coast

The further west you go, the worse it gets: either you get up early or they stay up late. From Chicago, 8:00 to 10:00 AM is evening in India. From Los Angeles, 7:00 to 9:00 AM is already late evening there (see the table), so a lot of US and India teams on the West Coast just agree on one fixed early-morning slot and stick to it.

Where people slip up

The date is the big one. India is ahead, so 9:00 PM on Sunday in Los Angeles is already Monday morning in India, and an email that only says "9 PM" will confuse somebody. Always write the day and date next to the time.

Next is the moving gap. Only the US and the UK change their clocks, so a weekly meeting can jump by an hour on one side's calendar even though neither side touched anything.

Then there's the half hour. 8:00 AM in New York in summer is 5:30 PM in India, not 6:00 PM, and converting only the hour leaves you 30 minutes out. And don't forget that holidays and weekends differ; glance at the other side's calendar before you book.

Checking a specific date

The Time Zone Converter turns any time into India time for the date you pick, and the Meeting Planner shows both cities' days side by side so the workable hours jump out. For the time in India right now there's IST time now, and if you only need one pair, try New Delhi to New York or New Delhi to London.

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