Checking when a date has passed - Swift
<p>Well, the title pretty much says it all. What I am trying to do is check when a date has passed. So, for example let us say that a user is using my app and then they go to bed and check my app in the morning. When my app opens up I need to check if the day has changed at all.</p>

<p><em>Also I don't really need to know this information when the app is terminated or in the background or anything. I just need to know if the date has changed when the app is running and the user is actually interacting with it.</em></p>

<p><em>Note: I have looked at other Stack Overflow Posts pertaining to this issue but none of them have helped me.</em></p>