Wrong internet time zone

All of the sudden my Apple TV, Mac Book and Amazon Fire tablet apps are all registering my internet in the Central time zone.  So if I stream the Fox Now app (as an example) I get the Chicago channel, but I'm in Michigan, in the Eastern time zone. I tested my Mac Book and Amazon Fire tablet using my cell hotspot and that isn't happening, which tells me it's something in my internet settings, but I can't figure out how to change it.

I was put into a new offer 2 months ago, and this change occured. I'm not a new customer, and never had this issue prior to my plan change.

Please help!  Thanks

Joshua

@ComcastChe I see you've helped a person with this in the past.