Refreshing charts in the View pane is done by tapping the Refresh icon 
. Whenever it is tapped a transit chart will be either refreshed to the current time, or a current transit chart will be created.
If there is one chart selected when the Refresh icon is tapped, then it is automatically replaced with transits for the current date, time and home location. If there are two charts selected, then the Refresh icon automatically updates the second (outer) chart with transits for the current date, time and home location.
