@[deleted] is correct. osTicket used the setting of the server it is hosted on, and that setting must be configured manually. It is one of the things that a system admin will do when setting up a new web server.In my case I had to add date.timezone = "America/Vancouver".List of supported timezones.If your website is on Linux/Apache you'll have to add it to the php.info file for your site. The location of this file is different depending on your setup.If you are running Windows/IIS, the same solution probably applies as well but you'll have to ask someone else.If in doubt you can contact your web host and ask them to do this for you.