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Privacy Policy

Last updated: January 2026

1. Introduction

Welcome to clock.onl. We are committed to protecting your privacy and ensuring you have a positive experience on our website. This Privacy Policy explains our practices regarding data collection, use, and disclosure when you use our free online world clock service.

At clock.onl, we believe that privacy is a fundamental right. We have designed our service with privacy as a core principle, collecting only the minimal information necessary to provide you with a seamless experience.

2. Information We Collect

clock.onl is designed with privacy in mind. We collect minimal information to provide our service:

  • Local Storage Data: Your preferences (such as dark mode settings, saved cities, time format preference, and city card order) are stored locally on your device using browser localStorage technology. This data never leaves your device and is not transmitted to our servers.
  • Geolocation Data: If you grant permission, we use your location to display your current city name. This data is processed entirely in your browser and is used solely to make a single request to a third-party geocoding service to determine your city name. We do not store this location data on our servers.
  • Technical Information: When you visit our website, standard web server logs may temporarily record technical information such as your IP address, browser type, and the pages you visit. This information is used solely for maintaining service quality and is not used for tracking or profiling.

3. Information We Do Not Collect

We want to be transparent about what we do NOT collect:

  • We do not collect personal identification information (name, email, phone number, etc.)
  • We do not use cookies for tracking or advertising purposes
  • We do not use analytics tools that track individual user behavior
  • We do not share any data with third parties for advertising or marketing
  • We do not store your browsing history or search queries
  • We do not require account registration or login
  • We do not collect payment information (our service is completely free)
  • We do not use fingerprinting or other tracking technologies

4. How We Use Your Information

The limited information we process is used solely to:

  • Display your saved cities and time zone preferences
  • Remember your display preferences (dark mode, time format)
  • Show your current location name (when you grant permission)
  • Ensure the website functions correctly
  • Maintain and improve service quality

5. Third-Party Services

We use the following third-party services to provide our functionality:

  • Tailwind CSS CDN (cdn.tailwindcss.com): Used for styling the website. Tailwind Labs may log basic request information in accordance with their privacy policy.
  • Google Fonts (fonts.googleapis.com): Used for typography. Google may log requests in accordance with their privacy policy. We use the Inter font family.
  • BigDataCloud API (api.bigdatacloud.net): Used for reverse geocoding your location to display your city name. This API is only called when you grant location permission. The API receives your coordinates and returns location information. Please review BigDataCloud's privacy policy for details on their data handling.

We have chosen these services carefully to minimize data exposure while providing essential functionality.

6. Data Storage and Security

Your data security is important to us. Here's how we protect your information:

  • Local Storage: All your preferences and saved cities are stored in your browser's localStorage. This data remains on your device and is never transmitted to our servers.
  • HTTPS: Our website is served over HTTPS, ensuring all communications between your browser and our servers are encrypted.
  • No Server-Side Storage: Since we don't collect personal data, there is no server-side database of user information that could be compromised.
  • Minimal Data Principle: We follow the principle of data minimization, collecting only what is absolutely necessary for the service to function.

7. Your Rights and Choices

You have complete control over your data:

  • Access: You can view all your stored preferences by opening your browser's developer tools and examining localStorage.
  • Deletion: You can clear all saved preferences by clearing your browser's localStorage or using your browser's "Clear site data" feature.
  • Location Permission: You can deny or revoke location permission at any time through your browser settings. The clock will continue to work without location access.
  • Browser Controls: You can use your browser's privacy features, such as private/incognito mode, which prevents localStorage from persisting between sessions.

8. Children's Privacy

clock.onl is suitable for users of all ages. We do not knowingly collect any personal information from anyone, including children under the age of 13. Since our service does not require any personal information to use, there are no special considerations for children's data.

9. International Users

clock.onl is accessible worldwide. Since we do not collect or store personal data on our servers, there are no cross-border data transfer concerns. All user preferences are stored locally on your device regardless of your location.

10. GDPR Compliance

For users in the European Economic Area (EEA), we are committed to GDPR compliance. Since we do not collect personal data, most GDPR provisions regarding data processing do not apply. However, we respect your rights under GDPR and have designed our service to be privacy-first by default.

11. CCPA Compliance

For California residents, we comply with the California Consumer Privacy Act (CCPA). Since we do not sell personal information and do not collect personal information beyond what is stored locally on your device, the CCPA's provisions regarding the sale of personal information do not apply to our service.

12. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or for legal, operational, or regulatory reasons. We will notify you of any material changes by updating the "Last updated" date at the top of this page. We encourage you to review this Privacy Policy periodically to stay informed about how we are protecting your privacy.

13. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our privacy practices, please contact us at:

Email: [email protected]

We take all privacy inquiries seriously and will respond to your request as quickly as possible.