What would I change given more time:

• Handle errors by the API on completion instead of just a print statement.
• Handle errors thrown by saving data to file.
• Add a loading state to avoid empty views when there's no cache. (maybe use the default location, load that and when I receive the location load again for that.)
• Move the DateFormatter from the Model to avoid creating one for each call of the property.
• Add Documentation and more Comments.
• Add Tests.
• Add a Repository/Service layer between the API, File Loading and the ViewModels to make the code easier to test.