Privacy Policy

Calculations happen in your browser

Week number lookups, date conversions and the other calculators run in your browser. The dates you enter are not sent to our server. There are no accounts, and you don’t need to give us your name or email address to use the tools.

Browser storage and cookies

The home page saves one setting, wn_lang, in your browser’s localStorage to remember whether you prefer the Chinese or English interface. It stays on your device and is not sent to us. You can delete it at any time by clearing this site’s data in your browser.

We don’t currently use an analytics service, and the site does not set advertising or tracking cookies.

Advertising

The site does not currently show ads. If we add advertising such as Google AdSense in the future, we will update this policy before the ads go live, explaining how third-party vendors, including Google, use cookies to serve ads based on your visits to this and other websites, and how you can opt out of personalized advertising.

Hosting and technical logs

The site is hosted on Cloudflare. Like most hosting and network providers, Cloudflare processes technical information such as IP addresses, browser type and request details in order to deliver and protect the site.

If you contact us

If you email us, we receive your email address and your message. We use them only to reply to you and keep them for as long as needed to deal with your request.

Children’s privacy

The site is not directed at children under 13, and we do not knowingly collect personal information from children.

Changes to this policy

If we change this policy, we will post the new version on this page and update the date at the top.

Contact us

Questions about this policy: email [email protected] or use our Contact page.