Privacy policy

Calculator inputs

Date calculations run in your browser. The application does not send selected dates or optional event names to a dedicated calculator database.

When you create a shareable result, the selected dates and optional event name are placed in the page URL. Anyone who receives that link can read those values. Do not put private or sensitive information in the event-name field.

Technical request data

The site is delivered through Cloudflare. Like other web infrastructure providers, Cloudflare may process technical request information needed for security and delivery, such as an IP address, browser details, requested address, timestamp, and network diagnostics. Its handling of that data is governed by its own service terms and privacy commitments.

The current application code does not install advertising trackers, create user profiles, or set analytics cookies. If that changes, this policy will be updated.

Emails

If you contact us, your email address and message are processed so the request can be read and answered. Email records may be retained when reasonably needed for follow-up, security, or record keeping. Do not email sensitive information.

External links and changes

Some pages may link to other websites. Their privacy practices are separate from ours. We may update this policy when the site or its service providers change. The revised date will appear at the top of this page.

For privacy questions, use the address on the contact page.