Miele PG 8504 Operating Instructions Manual page 64

Settings 
Set the date
64
The current date will be set in the selected date format.
Open the systems menu by switching the machine off with the 

button and then with the  held in switch it back on with the 
button.
Open the menu as follows:

 Settings 
 Date
Set

Use the arrow buttons  (higher) and  (lower) and confirm your

entry using 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 cancelled using the  button
and repeated.
Use the arrow buttons  (higher) and  (lower) to set the month/

day and confirm your entry using the OK button.
Use the arrow buttons  (higher) and  (lower) to set the year and

press the OK button to save the date.
The date will be saved when the OK button is pressed for the last
time.
Date