Thanks for the replies, however I really wish to avoid a category chart as it require constant time interval data points to show a time relation to events.

The reason this is important to me is that I have other "scatter line" charts with date/values and wish to synchronize the notes along with the chart to help better explain the data trends based on the notes, without manually adding a text box to every data point in the chart. This also become more daunting when I attempt to change the date range of the chart and have to move/delete/create text boxes to match the time they correspond with.

Thank you for your suggestions
Doug Brown