Privacy Policy

1. Information We Collect

We do not collect any personal data. All of our date and time tools run entirely in your browser — no information is sent to our servers. The only data stored locally is your dark mode preference, which is saved in your browser's localStorage so your preference persists between visits.

2. Cookies

We use cookies only as required by Google AdSense for displaying advertisements. These cookies are managed by Google and are used to serve personalized or non-personalized ads depending on your consent preferences. We do not use Google Analytics, Facebook Pixel, or any advertising-analytics trackers. See Section 3 for details on the privacy-preserving analytics we do use.

3. Third-Party Services

Google AdSense — we use Google AdSense to display advertisements. Google may use cookies and web beacons to serve ads based on your prior visits to this or other websites. You can learn more by visiting Google's Privacy Policy, and you can opt out of personalized advertising via Google Ads Settings.

Umami Analytics (self-hosted) — we use a self-hosted instance of Umami at stats.admk.com to understand which pages are popular and how visitors reach the site. Umami is a privacy-focused, open-source analytics platform: it does not set cookies, does not use fingerprinting, does not track users across sites, and collects only aggregated, anonymous page-view data (page URL, referrer, country, browser, device type). No personal data is collected and no data is shared with third parties. Umami is designed to comply with GDPR, CCPA and PECR without requiring a consent banner.

4. Data Storage

All calculations are performed locally in your web browser using JavaScript. No dates, times, or calculation results are ever sent to our servers or stored remotely. Your data stays on your device at all times.

5. Children's Privacy

Our website is not directed at children under the age of 13. We do not knowingly collect personal information from children. Since we do not collect personal data from any users, this policy applies equally to all visitors regardless of age.

6. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or for legal, regulatory, or operational reasons. When we make changes, we will update the "Last updated" date at the top of this page. We encourage you to review this policy periodically.

7. Contact

If you have any questions or concerns about this Privacy Policy, please contact us.