Sunrise and Sunset Time

I often exchange messages with my daughter early in the morning while we are drinking coffee in our homes which are about 500 kilometers apart. She lives 500 kilometers southwest of here...

It's darker than that here, she told me recently, when I sent her a picture of the 7:30 am sky I was looking at... I checked and, sure enough, sunrise in Ottawa is currently 7:36 am while sunrise in Guelph is 7:47... 11 minutes later. Sunset in Ottawa is at 4:20 pm these short days of winter, while in Guelph the sun currently sets at 4:45 pm.

I never thought about it before... We're in the same time zone, but I guess even 500 kilometers does make a difference in sunrise and sunset times!