Hello Brian E,
you can use an XY Scatter chart for that kind of data. Chart the date values as the X values and the time as the Y values, then format the axes. In the attached example, the Y axis increments are 2 hours. The X axis has a marker ever 14 days. Other options are possible, just say what you need.
I've also put in a few columns to calculate and display the delta. For this to work, I've sorted the data to be ascending, so the oldest date/time is on top.
cheers, teylyn