Are you connected to QuickBooks desktop version, or QuickBooks Online? If desktop, is your QuickBooks file hosted on a server somewhere outside your office?
I'm wondering if the Pacific time zone is where your QuickBooks data lives - either on Intuit's servers if it's QuickBooks Online, or if your QuickBooks desktop file is on a remote server in the Pacific time zone?
Also, which report are you looking at in QuickBooks to see the time entries?