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Night shift sleep schedule for a 7 pm to 7 am shift
Updated October 5, 2026 · Studies: Åkerstedt 2003, Wright 2013, Boivin 2014, Lee 2016, Ruggiero 2014 · Timing: Eastman & Burgess 2009, Sack 2007 · Caffeine: Drake 2013
Main sleep window for a 7 pm to 7 am shift
8:00 am – 3:45 pm
Go to bed at 8:00 am and set the alarm for 3:45 pm. That is 7 h 45 min of sleep, five full cycles, and it leaves 2 h 45 min between waking and leaving for the next shift.
Computed from the shift hours: bed = shift end + commute + wind-down · wake = bed + 15 min + 5 × 90 min · last coffee = bed − 6 h (Drake 2013) · nap slot at the middle of the shift
| Time | What |
|---|---|
| 6:30 pm | Leave for work |
| 7:00 pm – 7:00 am | Shift (12 h) |
| 1:00 am – 1:35 am | Nap: lie down at 1:00 am, 20 minutes of sleep after about 15 to fall asleep |
| 2:00 am | Last caffeine (6 hours before bed) |
| 7:30 am | Home |
| 8:00 am – 3:45 pm | Main sleep (7 h 45 min: 5 cycles of 90 minutes plus 15 to fall asleep) |
Assumptions: a 30-minute commute each way, 30 minutes between walking in the door and lights out, and the nap at the middle of the shift (1:00 am). Change any of these and the sleep window moves with it.
What studies of night workers measured
Reviews of shift work agree on where the trouble sits. Åkerstedt lists three acute problems as the worst: getting to sleep, a shortened sleep, and sleepiness at work that carries into the days off. The same review finds no clear sign that chronic sleep problems come from long-term shift work, so the damage you can document is the short, sleepy stretch around the shift itself.
Inside a night, the sleepiest hours are the last ones. Boivin and Boudreau place the peak of sleepiness at the end of the night, which on this schedule is the hour or two before 7:00 am and the drive after it. That is why the plan puts the nap at the middle of the shift and ends caffeine at 2:00 am: the nap shortens the long stretch to the end, and the cutoff protects the sleep that follows. Ruggiero and Redeker found 13 studies of naps taken during night shifts; most reported less sleepiness and better performance despite a short spell of grogginess on waking, though none measured safety outcomes, so the nap is a sensible slot and not a proven safeguard.
The 2:00 am cutoff comes from a caffeine trial in which 400 mg six hours before bed cost sleepers more than an hour. It means the second half of the shift runs without coffee, which is the hard part of this plan and the reason the nap sits just before it.
Days off: stay on nights or switch back?
Your day sleep starts at 8:00 am. A normal night's 11:00 pm is 9 hours earlier on the clock, or 15 hours later. The AASM review notes that delaying sleep is easier than advancing it, and Eastman and Burgess advise advancing a sleep schedule by no more than 1 hour a day. At that pace the move back takes about 9 days going earlier; going later at the 2 hours a day their travel plans assume with timed bright light takes about 8. Neither fits inside a two- or three-day break.
That leaves two honest choices. Stay close to the night pattern, sleeping a little later each morning if you want, and accept a few days with the family on a different clock. Or take the half step: after three days at 1 hour a day your bedtime has moved from 8:00 am to 5:00 am, a split between schedules and not a switch. Pick by the length of the break and by how many nights follow it. A single day off between two runs of nights is not worth turning around for.
The drive home
In the track study, 16 night workers drove the same route after a shift and again after a night of sleep averaging 7.6 hours. After the shift, 6 of 16 had near-crashes and 7 of 16 were stopped early for safety. After the sleep, none of them were. Wright, Bogan and Wyatt describe the commute home as one of the two places this sleepiness shows up, together with the shift itself.
On this plan the drive is at 7:00 am, right after the end-of-night peak. If you notice drift or heavy eyes, take it as the signal the study measured, not something to push through: stop, or arrange a ride, before the first mile and not after. General information, not medical advice.
Sources
- Shift work and disturbed sleep/wakefulness — Occupational Medicine 53(2):89-94, 2003 (Åkerstedt T.)
- Shift work and the assessment and management of shift work disorder (SWD) — Sleep Medicine Reviews 17(1):41-54, 2013 (Wright K.P., Bogan R.K., Wyatt J.K.)
- Impacts of shift work on sleep and circadian rhythms — Pathologie Biologie 62(5):292-301, 2014 (Boivin D.B., Boudreau P.)
- High risk of near-crash driving events following night-shift work — Proceedings of the National Academy of Sciences 113(1):176-181, 2016 (Lee M.L. et al.)
- Effects of napping on sleepiness and sleep-related performance deficits in night-shift workers: a systematic review — Biological Research for Nursing 16(2):134-142, 2014 (Ruggiero J.S., Redeker N.S.)
- How to travel the world without jet lag — Sleep Medicine Clinics 4(2):241-255, 2009 (Eastman C.I., Burgess H.J.)
- Circadian rhythm sleep disorders: part I, basic principles, shift work and jet lag disorders — Sleep 30(11):1460-1483, 2007 (Sack R.L. et al., AASM review)
- Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed — Journal of Clinical Sleep Medicine, 2013 (Drake C. et al.)
General information from population studies (NIH, CDC, NSF, AASM). It is not medical advice and does not replace a clinician who knows you.