Leisure period (7)
(Other definitions for spare time that I've seen before include "leisure hours" , "Leisure periods" , "Leisure moments" , "Prime seat for leisure period" , "Free period, no commitments (5,4)" .)
(Other definitions for weekend that I've seen before include "Occasional" , "time off work?" , "couple of days" , "Saturday plus Sunday" , "time for game?" .)