IWC Schaffhausen aquatimer perpetual calendar digital date-month Mode D'emploi page 25

Release the screw-in crown and pull it out to position 1. In this position, you can use
the direct-advance function to move the calendar forwards one step at a time by turn-
ing the crown slowly to the right. The calendar must not be adjusted between 8 p.m.
and 2 a.m.
The leap year display has four positions: "1", "2", "3" and "L". "L" stands for "leap
year". If the current year is a leap year (i.e. the year is divisible by 4, for example 2012,
2016, etc.), you must adjust the calendar so that the leap year display shows "L". "1"
corresponds to the first year after a leap year, "2" to the second and "3" to the third.
Once set correctly, the perpetual calendar will automatically show the correct date at
all times. You need do nothing until 1 March 2100, when you must manually move the
calendar forwards by one day. Although 2100 is divisible by 4, it is not a leap year
according to the Gregorian calendar.
Please note:
– If the crown is turned too quickly, the display discs might not be positioned cor-
rectly in the display window. Generally, such a default is automatically corrected by
the movement when the calendar advances within the following 24 hours. Should
this not be the case, the movement needs to be reset by an IWC watchmaker.
– You must not move the calendar beyond the correct date. The complicated move-
ment is mechanically programmed and cannot be moved back in time without mak-
ing a professional adjustment to the movement. However, if you do move the date
forwards beyond the correct date, you have two options: You can either pull out
the crown to position 2 to stop the movement until the calendar setting once again
matches the correct date. This makes sense if the date has been set only a few
days ahead. Or, you can slowly advance the calendar by 4 years until you reach the
correct date. Alternatively, you can entrust this operation to your watchmaker.
A Q U A T I M E R P E R P E T U A l C A l E n d A R d I g I T A l d A T E - M o n T h
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s E T T I n g T h E C A l E n d A R