Time Zone and Sunset

I live in the Central Time Zone, some 60 miles (about an hour drive) from the Mountain Time Zone.  One of the things that really amazed me when I moved to Texas in 1977 was the length of the days.  

As has happened before, I was watching a sporting event in the Dallas/Fort Worth area.  Fort Worth is about 300 miles to the east of Lubbock; Dallas, another 30 miles east.   As I was watching the television broadcast, I was struck by the fact that it was dark in the Fort Worth area about 8 PM, but we still had daylight, not even dusk, in Lubbock.

This is phenomenal to me....