I think I had a similar issue once. I discovered that my default time zone in my Google/Gmail account was set incorrectly. I logged into my Google account and dug through the account settings and eventually found it.
Hope this helps.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
Thanks, Ann. I snooped around, but haven't found the setting. I did see on another forum where HTC was working on a fix, so perhaps it is an issue with their servers.