Task without date


How can I put task without date on the diagram? Is it possible to do without modification of source code?
Thanks for answer.

Best regards,

can you clarify, how such task should be displayed in a chart?

Currently, the dates are required. If the task does not have them, you may put some default values during the loading, so the component will be able to display them
docs.dhtmlx.com/gantt/api__gantt … event.html