📋 In This Guide
Why Scheduling Across Time Zones Is Tricky
A time that works perfectly for one participant can be the middle of the night for another — and manually doing the mental math across three or four time zones is a common source of scheduling mistakes. This tool removes the guesswork: pick your meeting time in your own zone, add the cities your participants are in, and see every local time side by side instantly.
Remote Teams
Coordinate calls across globally distributed colleagues
Client Calls
Avoid accidentally scheduling a 2 AM call for a client abroad
Day-Shift Awareness
Instantly spot when a meeting falls on a different calendar date
Daylight Saving Time and Why Offsets Shift
Many countries — including the United States, the United Kingdom, and Australia — shift their clocks forward or back seasonally for daylight saving time, changing their UTC offset by an hour for part of the year. India Standard Time, by contrast, is a fixed UTC +5:30 offset all year round with no daylight saving adjustment. This is why the "gap" between India and, say, New York, isn't always exactly the same number of hours — it depends on the date.
When the Date Itself Changes
Because time zones can be many hours apart, a meeting scheduled late at night in one zone can land in the early morning of the next calendar day somewhere far ahead (like Australia relative to India), or the previous day somewhere far behind (like the US relative to India). This calculator flags exactly when this happens for each city you compare, so scheduling mix-ups about "today vs tomorrow" don't slip through.
Working with Unix timestamps too?
Convert epoch timestamps to IST or UTC dates and back.
Finding a Workable Meeting Time
| India Time | US East Coast (approx) | UK (approx) |
|---|---|---|
| 7:00 PM IST | 9:30 AM (same day) | 2:30 PM (same day) |
| 9:00 PM IST | 11:30 AM (same day) | 4:30 PM (same day) |
| 7:00 AM IST | 9:30 PM (previous day) | 2:30 AM (same day) |
Given the roughly 9.5 to 12.5 hour gap between India and various US time zones, evening IST tends to land in a reasonable US morning-to-midday window — one of the more commonly used compromise slots for India-US scheduling, even though no single time is ideal for every zone simultaneously.
5 Time Zone Scheduling Mistakes to Avoid
Frequently Asked Questions
Pick a proposed time in your own zone, then check what that instant looks like in each participant's local time. Watch for very early or very late times, and for date shifts in different zones.
Time zones are offset by hours, so late-night times in one zone can fall on the next calendar day in a zone further ahead, or the previous day in a zone further behind.
Yes. It uses each time zone's official current rules, including daylight saving adjustments where applicable, for your selected date.
India Standard Time is a fixed UTC +5:30 offset year-round with no daylight saving. Many Western countries shift clocks seasonally, changing their offset from India by an hour part of the year.
Given the roughly 9.5-12.5 hour gap, a common compromise is early morning or evening IST, landing in the previous or same evening for US participants — though no time is ideal for everyone.
No. All calculations happen instantly inside your browser using JavaScript's built-in time zone data. Nothing you enter is uploaded, logged, or stored on any server.