Miele PG 8581 Operating Instructions Manual page 64

Settings 
Setting the clock
64
To set the format for the time of day:
Open the menu as follows:

 button
 Settings 
Time of day

Set

Use the arrow buttons  (higher) and  (lower) to set the time and

confirm your selection with the OK button.
When the OK button is pressed, the display jumps automatically to
the next input position. You cannot go back to the previous entry. If a
mistake is made, the process must be canceled using the  button
and repeated.
Use the arrow buttons  (higher) and  (lower) to set the minutes

and press the OK button to save the time of day.
The time of day will be saved when the OK button is pressed for the
last time.
Time of day