Time zone Image 
If you activate this checkbox, enter a valid date and a place, and click the "continue" button, a time zone worldmap will be shown at the bottom of the next screen. The birth place will be marked on the map and information will be given about the Universal Time and the time zone of the place for the given birth date and time.

When you click on the time zone map image, an extensive help page will appear which explains more details of the time zone map, and reveals some secrets for special data entry requirements. Please try it out.