To add a time zone to your iPhone's World Clock, do this:
From the Home screen, tap Clock. The Clock screen appears.
Tap World Clock. The World Clock screen appears, as shown in Figure 45-3. The World Clock always displays the current time for your local area on top.
Figure 45-3. The World Clock screen shows current local time.
Tap the plus sign in the upper-right corner of the screen. The virtual keyboard appears.
Type the name of a major city in the time zone that you want to track. As you type, a list of cities appears, as shown in Figure 45-4.
Tap the city name you want. The World Clock screen displays your newly ...