The application displays your calendar events with number of days left to the event date. All events are conveniently displayed on single scrollable screen.
Days & Dates application contains days calculator to determine number of days between two dates date plus number of days date minus number of days.
You can also create your own events to mark significant dates in past or future which are beyond limitation of standard calendar. With custom events you can see e.g. how many days passed since Declaration of Independence Boston Tea Party and any other events you want to mark.