I need instructions for changing the clock setting on my 2003 E320 Thank you very much

If your car have the command you must set all the clock function on command take the owner manual an read how to do it all the information in the owner manual if don't have the command, First ignition on, then have a look on steering wheel you have two multifunction switch group on your steering at left and right, get mileage display on press up page key on left switch group, keep eye on instrument cluster display then get setting menu and press up arrow key on same switch group, then use up and down arrow keys to select time and now you have to operate right hand switch group + or - key for increase or decrees time.adjust the time or date you need then then again up arrow key next step will appear time setting will set your time format,