Last updated: September 24, 2026
Perfect Clock is a free, personal-project world-clock timeline app, available as a web app and as a Chrome extension. By using it, you agree to these terms.
Perfect Clock lets you view multiple cities' current time on a shared horizontal timeline, optionally overlaid with calendar-style events and browser notifications, and optionally with your Google Calendar events imported (read-only). See the Privacy Policy for what data it handles and how.
Perfect Clock is provided "as is," without warranty of any kind, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement. It's a personal project maintained on a best-effort basis, not a commercial product with a support contract.
To the fullest extent permitted by law, the developer is not liable for any damages (including lost time, missed events, or missed notifications) arising from your use of, or inability to use, Perfect Clock. Notifications and calendar sync depend on your browser and Google's own services being available and working correctly, which the developer doesn't control.
Google Calendar sync is optional, read-only, and requires your explicit sign-in. This access can be revoked at any time, by you (via the app's "Disconnect" button or your Google Account permissions page) or, in principle, by Google.
The developer may change, suspend, or discontinue any part of Perfect Clock at any time, including introducing paid features in the future - existing free functionality won't be taken away and turned into a paywall without notice, but new capabilities may be added as part of a paid tier. These terms may also be updated from time to time; changes will be posted at this same URL with a new "Last updated" date.
Don't use Perfect Clock in a way that violates applicable law, or attempt to abuse, disrupt, or reverse-engineer the parts of it that talk to third-party services (Google Calendar, Open-Meteo) beyond normal use of the app.
Questions about these terms can be raised via the project's GitHub issues.