Changing Time Zones

When I made my first 2 posts I noticed it seemed to be showing Pacific time zone. I tried using help to change it. The first attempt I made change the time to post it (so it was scheduled to post 2 hours later). So, I went back to help and discovered I needed to go into settings, and then formatting and change the time zone. Hopefully this will be correct now. Next challenge, to see if I can get rid of the one scheduled to post later.