By default, a new account has it's time zone set to Pacific Standard Time (PST). To change the time zone for your account sign in to your management dashboard, click your name in the top right corner, and select "Preferences".
On this page, the first option will be to select your time zone. Use the drop down to make this change. After the correct time zone has been selected and you have clicked save, you will need to Sign Out of your account, then close and then reopen your browser for these changes to take effect.