Privacy

Nothing you type is stored. Dates, times and places travel in the address of the page, are used to compute an answer, and are not written to any database or log kept by this site.

Because the parameters are in the address, a link to a chart carries a date, a time and a place with it. Share one only with someone you would tell those things to.

One thing is kept in your browser, and only if you ask for it: the appearance you chose, under the key qimendunjia:color-scheme. Setting the appearance back to automatic deletes it.

No cookies are set, and there is no analytics of any kind.