About the Timezone Converter
Scheduling across countries goes wrong for two reasons: daylight saving shifts on different dates in different places, and people mentally convert with a fixed offset they learned months ago. This converter asks your browser's own time zone database for each city, so the answer is right for the specific date you picked — including the awkward weeks when one country has changed clocks and another has not.
How to use the Timezone Converter
- Choose the source time zone, date and time.
- Add the cities you need to compare from the dropdown.
- Read each local time, including the day, so you spot date rollovers.
- Remove any zone you no longer need.
Why use this tool?
Daylight saving aware
Offsets come from the IANA time zone database for the exact date you enter, not a fixed number.
Shows the weekday
A 9pm meeting in New York is next-day in Asia — the day label makes that impossible to miss.
Unlimited cities
Compare as many zones as a distributed team needs, side by side.
Frequently asked questions
What is the difference between UTC and GMT?
For everyday purposes they are the same reference point. UTC is the modern atomic standard; GMT is a time zone that also observes British Summer Time in the UK, which UTC never does.
Why do some countries change clocks on different dates?
Daylight saving start and end dates are set nationally. Europe and North America switch weeks apart, and most of Asia and Africa do not switch at all.
Can I plan a recurring meeting with this?
Check the time on a date in each season. If the offset differs, your recurring slot will drift for part of the year and you may need two slots.