How to use this world clock
- Search or quick-add a city. Type a city name into the box, pick it from the suggestions, or tap one of the quick-add buttons for common business hubs.
- Read the live cards. Each city shows its current time, the date, its UTC offset and whether it is currently day or night there.
- Check the meeting planner grid. Scroll across the hourly columns to see which times land in business hours (9am to 5pm local) for every city on your list.
- Remove or reorder cities with the buttons on each card. Your list is saved automatically, so it is still there next time you visit.
Who needs a world clock like this
Anyone whose day does not fit inside one time zone runs into the same problem: knowing what time it actually is somewhere else, right now, without doing mental math. Remote teams spread across countries use it to answer "is it too early to message them" before sending a note. People setting up an international call use it to avoid waking someone up or catching them at the end of a long day. Travellers use it to keep track of home while they are away, and to work out when it is safe to call family. Students taking online classes with instructors abroad use it to translate a class schedule into their own local time, and back again.
The tricky part has never been reading one clock, it is comparing several at once and figuring out where their working hours actually line up. That is what the meeting planner grid below the clocks is built for.
How the meeting planner grid helps
Instead of converting one city's time at a time, the grid lays out the next 24 hours as columns and every city you have added as a row, with the current hour on the far left. Business hours are shaded in a distinct colour for each city, so instead of doing the conversion yourself, you can just look down a column and see whether it falls inside the highlighted block for every row. A column where every city is shaded is a genuinely good time to schedule a call. A column where only some cities are shaded shows you exactly who would be outside their normal working hours, and by roughly how much, so you can make an informed trade-off instead of guessing.
Time zones and daylight saving
Every city on this page is stored as a proper IANA time zone name, such as Europe/London orAsia/Karachi, not a fixed offset. That matters because a fixed offset breaks twice a year in any region that observes daylight saving. Using the real time zone means your browser's own time zone database works out the correct local time and offset for the actual date, including the exact day each region springs forward or falls back, so the clocks and the grid stay accurate all year without any extra effort from you.
Frequently asked questions
Does this account for daylight saving time?
Yes. Each city is stored as an IANA time zone (for example America/New_York), and your browser's built-in time zone database applies the correct daylight saving rules automatically, including the exact date each region switches.
Is my location tracked?
No. Nothing is detected automatically and nothing is sent anywhere. You manually search for and add each city, and your list is saved only in your own browser's local storage on this device.
How many cities can I compare at once?
Up to 12 at a time, which keeps both the clock cards and the meeting planner grid easy to scan. Remove a city to make room for another.
Does it need an internet connection?
No. Once the page has loaded, everything runs from your browser's own clock and time zone data, so it keeps working offline.
What does the meeting planner grid show?
A row per city and a column per hour, starting from right now and running 24 hours forward. Columns are shaded for business hours, daytime and night, so you can scan for a slot that lands in working hours for everyone.
Related: days until calculator · business days calculator · countdown timer.