Check this 8 1/2 min.  video clip about the weirdest time zones in the world.

After you finish taking notes and  working on your homework, if you need help, check this 4 1/2 min.  video clip I created to help you find time  differences between cities and countries around the world.

Here is a 12 min.  video clip I created that goes in more detail my lecture notes below. This video goes through each slide.