This policy explains what information this site collects and how it is used. Last updated: November 8, 2026.
Dates you enter in a calculator
All calculations run in your own browser. The dates you enter are not sent to us or stored on our server. Calendar files you download are created on your device.
Messages you send us
If you use the contact form, we receive your name, email address and message. We use them only to reply to you and do not sell or share them.
Analytics
We use Google Analytics to understand which pages are useful, for example how many people visit and from which country. It uses cookies and collects data such as your device type and pages viewed, but not your name. You can opt out with the Google Analytics opt-out add-on.
Advertising
We use Google AdSense to show ads, which keeps the site free. Google and its partners may use cookies to show ads based on your visits to this and other websites. You can turn off personalized ads in Google Ad Settings. Visitors in some regions will be asked for consent before these cookies are used.
Cookies
Besides analytics and ads, the site sets no tracking cookies. You can block or delete cookies in your browser settings.
Children
This site is not aimed at children under 13, and we do not knowingly collect their information.
Your rights and contact
You can ask us to delete any message you sent. Use the contact page for any privacy question.