The Watchman Monitoring Dashboard allows for searching of computers by the date they last reported to the Watchman Monitoring Servers. This document details creating a search for a search of Computers by Last Report date or date range.
Navigate to Computers list.
Click on the Search button to display the search builder.
Under the Select Criteria... drop down Select (or search for) Last Report Between.
You will be presented with the Start Date and End Date criteria, clicking into Start Date or End Date will display a date selector.
You will be displayed a list of computers whose last report date is between the specified date range.
Export as CSV to create a report.