How do adjust timezone locally?

My EGP XMLTV xml feed has all the times in EST. I’m in PST. The guide works fine except when I look at it is showing me everything as if I was in EST.

How do I get this to display properly for PST?

For example if a game starts 7:15pm EST it shows current time is 4:15pm and the block schedule for that game starts at 7:15pm which is 3 hours in the future. There should be a way to adjust this locally so that at 4:15pm PST the game is beginning.

I’ve tried going into the PVR settings an checking the “offset all channels” button as well as adjusting +3 — that didn’t work.
I have tried -7,-3,+3, and +7….none work. the only thing that works is to not adjust offset locally except my EPG is in EST times.