In the scene where Tracy is on his bacon run, every mention of January 17 is either shot so the actor's mouth is hidden or dubbed over. This can be seen most clearly when Cerie says January 17.
In the context of the scene where Tracy is on his breakfast run, all mentions of January 17 are deliberately avoided from view, either by cutting away or using a voiceover, suggesting that this date holds some significance that should not be revealed.