The data for this calendar is calculated with Solar Fire 8 on a Dell with Windows 10 Pro. The data is hosted by Google.
Interpretations are 'out-of-the-box' from Solar Fire 8. Only spelling and grammar have been changed. We didn't want to get into deciding what the transits mean. The interpretations are provided as a hint, not absolute predictions. If you don't agree with the interpretations, you can import the calendar into your own and change the interpretations there.
Weird or Duplicate Entries
If you find your Android Calendar app has duplicate entries, or other weird problems, you can reset it by unlinking from the main Transit Calendar. This might include "unsubscribing".
Then clear the calendar data cache:
Go to Settings > Applications > Manage applications
Press the menu button and choose "filter"
Go to "Calendar Storage" click on it. This should delete all the calendar data on your device.
Press "Clear data"
Now relink to the Transit Calendar, or let it/help it Resync or Refresh.
See this page for more info: support.google.com/calendar