Privacy
Your notes stay with you.
Calculator notes
The grave log runs in your browser. When browser storage is available, the dates you type are saved locally under a key used by this site so they can survive a reload. Use Clear all to remove the saved notes. A separate local preference remembers the Reduce motion control. The calculator does not send those years to a server.
Embedded media
Video preview images are requested from YouTube’s image service. When you choose to play a recording, the page loads a YouTube privacy-enhanced embed. YouTube receives the connection information needed to provide that player and applies its own privacy and storage policies. You can instead open the credited recording on YouTube.
Hosting
The hosting provider can process technical request information such as network addresses and request logs to deliver and protect the website.
Analytics and advertising
Google Analytics measures page usage on the production domain. It can use first-party cookies, with a configured 30-day lifetime, and receives technical and usage information. Google signals and advertising-personalization signals are disabled. Page-location and referrer query strings are removed from the initial page-view configuration. The dates in the calculator are not included in analytics events. Preview and local development hosts do not load the Google tag. Adsterra native and banner advertising is enabled on the production domain. Its scripts can request ads and process device, network and usage information under its own policies. Local and preview hosts do not activate the advertising code. This description reflects the actual configuration; it will be updated when integrations change.
Your controls
You can clear this site’s browser storage through your browser settings, use Clear all in the calculator, and choose whether to load an embedded video. The calculator itself does not require an account, cookies, analytics or advertising.