Now you should set the current date and time on your server. Typically, the server will be set by default to whatever the date and time is wherever your server is hosted. You may find it more convenient to make the server's time match yours or the location where most of your customers are located. If so, click on Server Time in the Server Configuration section of WHM.
This will show you the date and time the server is currently set to, and allow you to set a new time zone, and synchronize the server's clock and date, based on the time zone you set with the nearest atomic clock (time) server on the Internet.