iwc PORTUGIESER PERPETUAL CALENDAR Mode D'emploi page 22

Time setting
Pull out the crown to position 2. This will stop the movement. To set the time
accurately to the second, it is best to stop the movement as the seconds
hand reaches 60. You can now set the time by turning the crown and posi-
tioning the minute hand exactly above the minute stroke. To start the sec-
onds hand, push in the crown to position 0. Moving the hands forward past
midnight causes the calendar to switch to the following day. When advanc-
ing the calendar, you can follow and observe the automatic switching se-
quence.
Important:
• Under no circumstances must the hands be turned back between 8 pm
and 2 am as this will result in maladjustment of the calendar.
• The crown must be pushed back into the winding position before wearing
the watch to avoid unintentional adjustment of the calendar.