** This app is beta-quality **
AirClock is a small app I wrote to help combat jet lag. All you need to do is set your take-off and landing times, and it will slowly shift time between your origin and destination.
Why is this useful? So that you can gradually adjust your body clock and shorten or lengthen your sleep cycle to compensate for the time zone changes gradually, rather than trying to do it all in one go (either by setting your clock to your destination when you board the plane, or suffering the effects at your destination)!
At present, the app only shows a clock, more useful features such as setting alarms are planned.
See https://al4.github.io/AirClock for more information.
* Support crossing the international date line. It now figures out which direction is closer and adjusts in that direction. This means, for example, that going from Auckland GMT 13 to London UTC via Dubai will actually shift time the opposite way to your direction of travel, as 11 hours is less than 13.
* Added an information panel, which displays useful information about the calculations.
* Pressing on the origin and destination panels now opens the preferences. Thank you Aisha!