iZones is a great app for those who are flying overseas for business or for many other purposes. This is an app that takes out the math and guesses for time zones when you are flying in other areas. One great thing about this app is that it automatically calculates the time of your destination which really is helpful especially when you have to plan meetings or events.

Also this app isn't always for flyers as those who are always need to have conference calls, seminars, etc with people in other countries. That way you can use this app without waking them up in the late or early owners!

There are 24 time zones, 16 are subdivided and it has 270 major cities programmed in. Also a great thing is you don't need to be connected to the internet to use this!

Check it out