Based on the graph 300, several methods for recommending content are proposed. As seen in the graph 300, weekly viewing habits tend to repeat with content viewings occurring at around the same time each week. The graph 300 includes respective peaks 306 at about 168 hours, 336 hours, 504 hours, 672 hours, and 840 hours. It will be appreciated that a week is 168 hours long (24 hours/day×7 days/week=168 hours/week). Therefore the weekly peaks 306 correspond to viewings that are around the same time and that are about one week to about five weeks apart. As also seen in the graph 300, daily viewing habits tend to repeat with content viewings occurring at around the same time each day. The graph 300 includes six respective peaks 308 between each of the weekly peaks 306. It will thus be appreciated that each peak 308 corresponds to viewings 24 hours apart. Therefore the daily peaks 308 correspond to viewings that are around the same time each day. Improved methods of making content recommendations are thus proposed that leverage these observations. For the sake of clarity not all of the daily peaks 308 have been labeled in FIG. 3.

The pairings, P, used to generate the graph 300 of FIG. 3 plotted the number of viewed program pairs against the time differences between the programs in each pair. The pairings do not consider the similarity between the video content, C_x, and C_y, of the paired viewings. Taking into consideration the similarity of the video content of the pairing has provided additional observations regarding the viewing habits of viewers.