A. Lange and Sohne, Lange 1 Timezone
This watch keeps track of time in two time zones at once. The larger subdial tells the time in the home zone (EDT (GMT -4) in New York for me) while having a second subdial to tell the time in any other zone. If one looks to where the five should be on the smaller subdial, one sees a gold arrow pointing downward. The timezone selected for the smaller subdial is shown on the outer edge of the dial. Currently I have selected Denver (MDT GMT -6). The two small indicators in each subdial indicate whether it is am or pm. The blue line that goes half way around shows night. With a click of the lower button on the left side of the watch, the outer dial (with the city names) will skip forward to the next timezone while automatically adjusting the time and 24 hour indicator on the smaller subdial.
