Breguet MARINE ÉQUATION MARCHANTE 5887 Mode D'emploi page 31

7. Setting the time
E crown X in position X2
English
The crown X simultaneously adjusts the 3 hands (hours, civil
minutes and solar minutes).
To set the time, place the crown X in position X2 by passing
over midnight to get the desired date and to make the difference
between morning and afternoon. To set a precise hour, make
sure that the last time the crown was rotated was in a clockwise
direction. Then push the crown X again in position X1. Once this
is done, turn the crown counterclockwise to make sure it turns
smoothly.
Your watch is now set to the desired date. In this example, it is
set to Saturday 14 January in the first year (1) following the leap
year at 10:11 am.
If this is the not the case, please return to Point 1 and start again.