If you have selected an Action status other than "Not Started", "Planned", or " Unknown", enter the estimated date (in MM/DD/YYYY format) that the Action was implemented. If you do not know the exact date, enter a date (such as the beginning of the fiscal year in which the Action was started, the beginning of the field season, the date the Plan Notice of Availability was published in the Federal Register, etc.) that could be logically associated with the Action.