Breguet ARINE ÉQUATION MARCHANTE 5887 Manual De Instrucciones página 30

6. Adjusting the day of the week
E pushbutton IV
English
Pushbutton IV adjusts the day of the week D.
Use pushbutton IV to correct the day of the week D to the day
preceding the desired day.
In this example, the day of the week is corrected to Friday.