Mondtag

Mondtag is a free lunar calendar designed to help planning activities. It's able to calculate lunar phase, signs of zodiac, rise and set of sun and moon. At the moment interpretations for gardening work are available.
It's also possible to create calendar-events to get reminded by the app of one's choice.

This software is open source and doesn't contain advertisements. No internet connection is needed and no user data gets utilised or stored outside the user's device. Sole exception is the functionality to search for geo coordinates: Therefor an Android-service is requested and the search term is submitted to Google.

See https://kah2.de/mondtag for further information.