Lock Gantt view date on Dashboard from a report


I am pulling data into a report and displaying on my dashboard. The gantt view always starts on March 15th. Executives viewing the report want to have it start on today's date. The both the source sheet and report's gantt view is checked to start at today's date, but it doesn't translate to the dashboard. I don't see any similar checkbox in the dashboard widget.

Any suggestions would be helpful.