My World Clock
Keep the cities you actually need in one place. Everything is saved in this browser — there is no account and nothing is sent anywhere.
Add a city
Or start from a popular city:
How your list is stored
Each entry keeps the city's identifier and its IANA time zone — not an offset. That distinction matters: a stored offset would be wrong for half the year in any city that changes its clocks, while a zone id stays correct through every change, including the ones that fall on different dates from your own.
Moving your list to another device
Export writes a small JSON file containing your cities, home city and view preference. Import reads it back on any device. Because the file is plain JSON you can also keep it in version control or a notes app; nothing in it identifies you.
Frequently asked questions
Do I need an account?
No. Your list is stored in this browser using localStorage, which means it never leaves your device and there is nothing to sign in to. The trade-off is that the list is per-browser: it will not appear on your phone unless you export it here and import it there.
What happens in private browsing, or if I clear my data?
Private windows usually discard storage when closed, and clearing site data removes the list. The page detects when storage is unavailable and tells you, so your changes still work for the session even though they will not persist. Use Export to keep a copy you can re-import.
What does setting a home city do?
The home city becomes the reference every other clock is compared against, so each row shows how far ahead or behind it runs. Without one, comparisons use the time zone your browser reports.
Can I share my list with someone?
Yes — Copy share link puts the whole list in a URL. Anyone opening it sees the same cities without changing their own saved list, unless they choose to save it. Very long lists make long URLs, so the link is capped at a length that stays usable.
Is the time on this page accurate across daylight saving changes?
Yes. Each city is stored as an IANA time zone id rather than a fixed offset, so the offsets and abbreviations shown are recomputed from the time zone database as clocks change — including for cities whose changes fall on different dates from yours.