TimePeriod

This object provides info about a time period expressed in ISO8601 (the time part is optional). E.g.:

                           // complete time period
                           var when = {
                               "from" : "2000-01-01T00:00:00Z",
                               "to": "2013-01-01"
                           };
                           
                           // time period having only start time
                           var when = {
                               "from" : "2000-01-01T00:00:00Z"
                           }
                        
                          // time period having only end time
                           var when = {
                               "to" : "2013-01-01"
                           }
                        

See also DAB discover 'when constraint'.
See also Report