 2. Regular bedtime, defined as the time the participant attempts to fall asleep, between 22:00 and 01:00 and regular waketime, defined as the time the participant gets out of bed for the day, between 05:00 and 09:00 as reported at Screening and verified by the Sleep Diary during the Screening Period before the adaptation night such that neither bedtime nor waketime is outside of the permitted time windows on more than 2 of the 7 consecutive nights 