The World Time Clock shows both your local time and times at important cities in different time zones around the world.
How to Set the World Time Disc:
1) Set the hands of the clock to your local time.
2) Turn the world time disc on the back side of the clock, so that your local time on the 24-hour band of the clock face lines up with your time zone.
For example: You are in California (Pacific Time Zone). The 24 hour time disc should indicate that the time in Chicago is two hours ahead of the local time shown by the hands.
Note: On the 24 hour time disc. the p.m. hours are shown as times from 13 to 24 hours.