How do I change the time period being displayed in Airport Departures and Arrivals?

The Airport Departures and Arrivals feature defaults to the current time period for the airport. You can change the time period several ways:
* Choose a different time using the period filter. Depending on the size of the airport, you can choose specific hours, or time ranges, or just select All Day.
* Change the start point of the time period by moving you mouse over the left side of the shaded area on the graph, holding down the left mouse button and dragging left. Let go of the mouse when you reach the preferred starting point.
* Similarly, change the end point of the time period by moving you mouse over the right side of the shaded area on the graph, holding down the left mouse button and dragging right. Let go of the mouse when you reach the preferred ending point.
* You can also just left click anywhere in the graph, hold the mouse button and move the graph left or right

As you change the time period the flights listed below as well as the statistics will be updated.