Timezone Difference
Jet Lag Risk Level
💡 Personalized Tips
About Jet Lag
Jet lag is a temporary sleep disorder that occurs when your internal body clock is out of sync with the time zone you're in. It's caused by rapid travel across multiple time zones, disrupting your circadian rhythm.
The severity of jet lag depends on several factors including the number of time zones crossed, direction of travel (eastward travel is typically harder to adjust to), your age, and how frequently you travel internationally.
This calculator uses scientific research to estimate your jet lag risk and provides personalized recommendations to help minimize its effects.
Frequently Asked Questions
Why is eastward travel worse for jet lag?
Eastward travel is generally more difficult because you're "losing" time and need to advance your sleep schedule. Our natural circadian rhythm is slightly longer than 24 hours, making it easier to stay up later (westward travel) than to go to bed earlier (eastward travel).
How long does jet lag typically last?
As a general rule, it takes about one day per time zone crossed to fully recover from jet lag. So if you cross 6 time zones, expect about 6 days to fully adjust. However, this varies based on individual factors and the strategies you use to combat jet lag.
What are the most effective ways to prevent jet lag?
The most effective strategies include: gradually adjusting your sleep schedule before travel, staying hydrated, avoiding alcohol and caffeine, getting sunlight at your destination, and considering melatonin supplements (consult your doctor first).