I have an XY chart that takes data from two columns. The 1st column is a
production amount (in cubic yards), while the second is the corresponding
date/time.

The data is plotted as expected (x = date/time, y = production). The
workbook is automatically opened on a shift basis, to generate a shift
report. As such, the data in the columns that the chart is looking at
changes each time it is run. The problem with this is the time range on the
x axis is not maximized for the date/time range in the column (i.e.: it
shows a larger range than required). I would like to manually set the range
of the x axis to maximize the viewable area of the chart, but it looks like
Excel represents this in some floating point format.

Is there anyway I can prorammatically change the range of a chart to
accommodate this requirement?

Thanks!