World clock

Compare local times across regions. The clock updates every second using your device’s clock.

How to read the clock

The time difference between London and São Paulo can change when either region changes its daylight-saving rules.

Displayed times depend on your device clock and the time-zone database provided by your browser.

Text generation and clock calculations run in your browser; entered values are not sent to the server for these tools.

Are daylight-saving changes included?

The browser applies its available time-zone rules for the current date.

Does the site get the time from a server?

No. The calculation runs in your browser.