Time. It's a fairly simple concept ... except when it isn't. It can get confusing when arranging a time to get with someone in a different time zone in the U.S., much less the world (is that my today ...
The sun both rises and sets later in the western parts of time zones, by about an hour at the extremes. If sunrise in Nashville, Tennessee is 6:30 a.m., it’s about 7:30 a.m. in Amarillo, Texas.