What is a world clock?
A world clock shows the current local time in different cities at the same time, so you can compare timezones without having to do the math yourself. This one lets you search for cities, keep your own list, and line up the hours when you’re trying to find a good time for a call.
You can use it to check a meeting across different offices, a flight arrival, or just see if it’s still working hours somewhere else. The times update every second right in your browser, so you don’t need to keep refreshing the page.
How this world clock works
Each city is tied to an IANA timezone name from the Time Zone Database, such as America/New_York or Europe/London. Your browser converts the current instant into that zone, so daylight saving is applied where those rules exist. The clock still comes from your device — if your system time is wrong, every city will be wrong by the same amount.
Offsets are shown from UTC, not as a private offset from your home city, so a shared link reads the same for everyone. The hour grid is aligned by instant: a column is one moment, labeled in each city’s local time.
How to use this world clock
- Search for a city and add it. Remove or reorder rows if you want a different first city — that city sets the date along the grid.
- Switch 12-hour or 24-hour time with the button.
- Hover across the hour tiles to compare the same moment in every city. Click a tile to pin a meeting time, then copy the link.
- Copy link also stores your city list in the address, so you can bookmark this view or send it.
For your local time only, use the online clock. To set a countdown until a meeting or call, use the online timer.
What’s included
- Searchable city list mapped to IANA timezones
- Your city set saved in this browser, with a shareable link
- Live time, UTC offset, abbreviation, and DST badge per city
- Hour-by-hour overlap view for finding a meeting time
- 12-hour and 24-hour formats
- No account, no extension, no time-server request
FAQ
How do I add or remove cities?
Type a city, country, or timezone into the search box and pick a match. Use the arrows to move cities around, and × to remove one. The first city also sets the calendar day used for the hour grid.
Does my city list save?
Yes. Your list is saved on this device and in this browser using local storage. There’s no account needed. You can also copy the page link to use the same cities on another device or send the list to someone.
How does the hour grid work?
Each column represents the same moment in every city. Shaded tiles show typical working hours, from 8:00 to 17:59 local time. Hover over a tile to line up the time, or click one to pin a meeting time and copy a link to it.
Is this using a time API?
No. Your browser works out the current time for each IANA timezone using your device clock. Nothing needs to be fetched from a time server.
Does daylight saving update automatically?
Yes, for timezones that use daylight saving time. IANA timezone data includes those rules, so the time adjusts when it should. A DST badge also shows when a city is currently on daylight time.
What time format is shown?
Use the 12-hour / 24-hour button to switch it. The page starts with the format your browser prefers.
Do I need an account?
No. Just open the page in your browser. Your city list stays on this device unless you share the page link.