Calculate night shift clock-out times that cross midnight. Shows '+1 day' for overnight shifts. For nurses, security, factory, and hospitality workers.
Night shift workers face a unique calculation challenge: their shifts cross midnight, making it genuinely confusing to figure out when they clock out. A shift that starts at 11:00 PM and runs 8 hours ends at 7:00 AM the next day — but which day? This calculator handles overnight shifts correctly, displaying your clock-out time with a "+1 day" label whenever your shift crosses midnight.
The calculator defaults to a late-evening start time. Enter your actual start time, set your shift length, account for any breaks, and get your exact clock-out time.
Common night shift schedules:
- Hospital night shift: 7:00 PM – 7:00 AM (12 hours) - Manufacturing 3rd shift: 11:00 PM – 7:00 AM (8 hours) - Security and patrol: 10:00 PM – 6:00 AM (8 hours) - Hospitality late shift: 11:00 PM – 7:00 AM (8 hours) - Emergency services: 6:00 PM – 6:00 AM (12 hours) - Transportation/trucking: various overnight windows
Health considerations of night shift work
Night shift workers have unique health challenges. The body's circadian rhythm is designed for daytime wakefulness and nighttime sleep. Working against this rhythm elevates risk for metabolic disorders, cardiovascular issues, and sleep disruption. Knowing your exact clock-out time helps you optimize your sleep schedule — arriving home at 7:15 AM means you need blackout curtains, a sleep mask, and a plan to get to bed by 8:00 AM to get adequate sleep before your next shift.
You clock out at 6:00 AM the next day. This calculator shows '+1 day' to make it clear your clock-out is the following morning, not the same day.
Count from your start time to your end time across the midnight boundary. 11:00 PM to 7:00 AM = 8 hours. This calculator does this automatically — just enter your start time and shift length.
Many employers offer a shift differential for night shifts — typically 10-25% more per hour. This is a negotiated or company-set rate, not a legal requirement under federal law. Some union contracts and healthcare employers mandate differentials.
Third shift (also called the graveyard or overnight shift) typically runs from 11:00 PM to 7:00 AM, covering the overnight period. First shift is usually 7 AM–3 PM and second shift is 3 PM–11 PM.
Research consistently shows night shift work disrupts circadian rhythms, which can affect sleep quality, metabolism, and long-term health. Strategies like consistent sleep schedules, blackout curtains, and strategic light exposure can help mitigate effects.
Overtime thresholds reference the U.S. Fair Labor Standards Act (FLSA, 40 hrs/week at 1.5x) plus state daily overtime rules (e.g., California Labor Code §510: 8h/day OT, 12h/day double-time). State labor laws vary — check your state's labor department. This calculator is informational only and is not legal, tax, or payroll advice.