Carpocratian

Carpocratian is a lunisolar calendar in which leap months are decided by the equinox, so the calendar follows lunar months while staying reconciled with the solar year. It is published as a single .js file, making it a self-contained script rather than a multi-file package.

The calendar is presented on the Carpocratian church site, in its calendar section. This listing reflects only the page's public title and description. No pricing or additional features are stated.