Time Zone Converter — With Daylight Saving Right for Every Date
Pick a city, a date and a time, and see that same moment in every other city on your list — the local time, whether it falls on the next or previous day, the city's UTC offset, and how many hours it is ahead of or behind your starting city. Add or remove cities to build the list you actually work with. The converter opens on your own city at the current time.
The hard part of time zones is daylight saving, and it is why mental arithmetic so often goes wrong. The gap between London and New York is five hours for most of the year but four for a couple of weeks in spring and autumn, because the two countries change their clocks on different dates. Pakistan and India do not use daylight saving at all, so their gap to Europe or North America shifts twice a year. This converter does not use a fixed offset table: every conversion uses your browser's built-in time zone database for the specific date you choose, so a meeting in March is converted with March's rules and one in July with July's.
It also handles the awkward edges correctly. On the night the clocks go forward, a time like 2:30 am does not exist, so it is moved to just after the change. On the night they go back, an hour happens twice, and the converter uses its first occurrence — the same choices calendar apps make.
Cities with half-hour and quarter-hour offsets, such as India (UTC+5:30) and Nepal (UTC+5:45), are included. Times between 10 pm and 7 am are greyed out, so a call that would wake someone up stands out at a glance.
Everything runs in your browser; nothing you enter is sent anywhere.
How to use the Time Zone Converter
- Choose the city your time is in — it starts on your own city.
- Set the date and time, or press Now for the current time.
- Read the matching local time, day and offset for every city in the list.
- Add cities from "Add a city" and remove any with the × button.
- Greyed-out times fall at night in that city — usually best avoided for calls.