Jet lag calculator
Use our free Universal Jet Lag Calculator to effortlessly determine your jet lag recovery time based on your departure and arrival time zones. Get personalized advice and tips to adjust your sleep schedule and make your travels more enjoyable.
See our related Post or Podcast on how to prepare and prevent Jetlag.
Definition of jet lag
Jet lag is a temporary sleep disorder that occurs when you travel across multiple time zones rapidly, typically by airplane. It happens because your body's internal clock (circadian rhythm) remains synchronized to your original time zone rather than adjusting immediately to your new location.
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Key elements of the definition:
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Time zone mismatch: Your internal body clock is out of sync with the local time at your destination
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Rapid travel: The quick crossing of time zones doesn't allow your body to adjust gradually
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Direction matters:
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Traveling east usually causes worse jet lag than traveling west
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Rule of thumb: it typically takes one day per time zone crossed to fully adju
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Read here more about jet lag symptoms and circadian cycle disorder
Common symptoms of Jat lag:
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Difficulty sleeping at night or staying awake during the day
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Impaired physical and mental performance
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Gastrointestinal problems
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Mild disorientation
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Headaches
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General fatigue
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