About the Time Zone Converter
Tezmy's Time Zone Converter shows what time it is, or will be, in several places at once. Choose a date and time in any time zone and instantly see the matching time in your chosen cities, with the UTC offset and a clear “+1 day” label when the date changes. It uses your browser's built-in time zone database with hundreds of zones and applies daylight saving time automatically for the exact date, which makes scheduling meetings, calls, flights and live events across countries easy.
Updated October 2026
How to use the Time Zone Converter
- 1Choose the time zone you're starting from. It defaults to yours.
- 2Pick the date and time, or press Now.
- 3See that moment in each city card.
- 4Add or remove cities to build your own world clock.
Planning calls across countries
Pick a date and time in your own zone and add the cities of everyone joining. You see each person's local time at once, with “+1 day” when it's already tomorrow for them. It's the easiest way to avoid calling someone at 3 a.m.
Daylight saving time
The USA, UK, Europe and some other countries move their clocks forward in spring and back in autumn, but on different dates, while India, Pakistan, Bangladesh, the UAE and many others don't change at all. The converter uses the real rules for the exact date you choose, so the difference between London and New York, for example, is correct all year.
Common conversions
- New York (EST/EDT) to India (IST): India is 9 hours 30 minutes ahead in winter and 9 hours 30 minutes minus one in summer (8 h 30 m).
- London (GMT/BST) to Dubai (GST): Dubai is 4 hours ahead in winter, 3 in summer.
- Pakistan (PKT) is 30 minutes behind India, and Bangladesh (BST) 30 minutes ahead.
UTC and time zone names
UTC (Coordinated Universal Time) is the world's reference time. Zones are shown as offsets from it, like UTC+5:30 for India. Abbreviations like BST or IST can mean different places, so the converter uses city names to avoid confusion. For work with servers and logs, the Unix Timestamp Converter turns a timestamp into local time. The Hours Calculator adds up the length of a shift across zones, and the Countdown Timer keeps you on track for a meeting that starts in another country.
Features
- Hundreds of time zones
- Daylight saving handled for each date
- UTC offsets shown
- +1 / −1 day labels
- Add or remove cities
- Starts in your own time zone
Frequently asked questions
How do I convert EST to IST?
Choose America/New_York as the time zone, pick the time, and add Kolkata (India). The converter handles whether New York is on standard or daylight time for that date.
What is UTC?
Coordinated Universal Time: the world's reference time. Every time zone is written as an offset from it, like UTC+5:30 for India or UTC−5 for New York in winter.
Does it handle daylight saving time?
Yes. Offsets are calculated for the exact date you choose, so dates in summer and winter show the right time.
Why does a city show “+1 day”?
Because at that moment it's already the next day there. For example, 8 pm in New York is the next morning in Tokyo.
How do I find a good meeting time?
Add every participant's city, then change the time until it falls in working hours for everyone.
What time is it in India when it's 9 a.m. in New York?
It's 7:30 p.m. in India when New York is on winter time (EST), and 6:30 p.m. during US summer time (EDT).
Can I convert a time on a future date?
Yes. Choose any date and the converter applies the daylight saving rules for that exact day.
Does it work on my phone?
Yes. It starts in your phone's own time zone, and you can add or remove cities with a tap.
What is my current time zone?
The converter starts with your device's own time zone, shown at the top with its UTC offset.