SimpleMoon funktioniert nicht

Use the calendar icon at the bottom to choose what date you want to see the moon view and illumination. diese App uses advanced mathematical calculations to determine the moon data for that day.  diese App provides a simple, elegant view of one thing: the moon phase and illumination for today (or any day you choose). diese App also shows you when the next full moon and new moon will occur from the "Today" view.  Did you know that the moon looks different depending on which hemisphere of the earth you are in?  Go to Settings and pick which hemisphere you are in, and you will see the moon as it appears to you in the sky.  Special thanks to my children, Alexander and Sophia who helped me design and test the app.  Tap the navigation buttons at the top or swipe to move between days.  It works even if you don't have an internet connection!