How to set the time for BMW 3 Series 320li 15?

If it is a deluxe edition, you can do it in the "I DRIVE" system. Select Settings, select time and adjust time in the main menu. If it is not the deluxe edition, there is a BC key on the left side of the steering wheel as the OK key. On the right side (one millimeter) of the BC key, there is an up-and-down dial key, which is a menu selection key.

Turn on the ignition and turn on second gear. Move the menu selection key down until the clock icon appears. Press the BC button directly to enter the adjustment.