This app looks like something that might be worth trying on your next overseas flight: Entrain is designed to monitor your body’s circadian clock using your smartphone and help you adjust faster to new time zones and schedules.
Entrain is a free app for iOS that connects users to lighting schedules developed by researchers at the University of Michigan. These schedules are mathematically proven to adjust you to new time zones as quickly as possible. Light is the primary driving input to the circadian clock, and by recording your lighting history, we can simulate your body’s clock and make recommendations for behavior.
Entrain app
You can download it on iTunes for free or see an example scenario at AusBT.