The multifaceted benefits of sleep have long been established. With its consistent link to various brain functions and its critical role in memory consolidation, recent research has increasingly focused on the impact of sleep within psychopathology. Sleep disturbances are not only a symptom of PTSD but are also linked to increased instances of PTSD and related symptoms. Specifically, sleep affects intrusions through its influence on memory formation. While promising, research in this area has yielded mixed results, and the timing of sleep remains under-researched. This study conducted experimental research to examine the association between sleep timing, intrusions, and the mediating role of sleep quality. Results indicated that sleep timing did not significantly affect intrusions, nor was it mediated by sleep quality. Concerns were raised regarding the study's measures, particularly the lack of objective sleep data that examines different sleep stages and the reliance on self-report questionnaires.