Jet lag schedule planner
Compare your usual sleep window on the home and destination clocks, shifted step by step at a rate you choose. Add each planned night to your calendar.
Shifts of 15 to 180 minutes per day, starting 0 to 14 days before travel, and plans of up to 60 days. Everything is calculated on your device. Downloads: CSV, JSON report and an iCalendar (.ics) file. Enter the time zones, travel date and sleep times in the settings. No text input is needed. Up to 1,000,000 characters. Review the settings before running.
Your result
How to use Jet lag schedule planner
- Enter your home and destination time zones and the travel date.
- Enter your usual sleep and wake times.
- Choose how many minutes to shift each day, how many days before travel to start and the direction.
- Review the day-by-day sleep windows, then download the CSV, JSON report or calendar file.
Useful next steps
How the plan is calculated
The time difference between the two zones is measured at noon on the travel date. Advancing moves sleep earlier and delaying moves it later; automatic picks the shorter of the two. Each day the sleep window moves by your chosen minutes until the full difference is covered, and both clocks are shown for every day.
Calendar entries
Nights before the travel date use the home clock and later nights use the destination clock. Each night starts on the evening of its date: a start from 12:00 is on that date, and an earlier start falls after midnight.
Not medical advice
This is clock arithmetic only. Happytails.ai gives no advice on light, naps, medicine or supplements. The shift rate is your choice, so ask a health professional what suits you.