IWC Schaffhausen Da Vinci 3761 Instrucciones De Manejo página 25

Crossing time zones and datelines with the Da Vinci Perpetual
Calendar Digital Date-Month
Setting when crossing time zones:
• When crossing time zones in an easterly direction, you should simply set
the time forward to the new local time.
• If you cross time zones in a westerly direction, you can set the hands of
your watch back to the actual time of day. When doing this, however, you
must not move back into the perpetual calendar's automatic switching
phase, i.e. beyond 2 am. If this situation occurs when you are travelling
west, you should set the local time of your destination before 8 pm. You
must not turn the hands back between 8 pm and 2 am. This is because the
calendar does not move backwards by one day when the hands are
turned back beyond midnight, but remains on the same day. If you go past
the end of the calendar's switching phase (i.e. beyond 2 am) when turning
the hands back, you run the risk of the calendar advancing by one day for
a second time and thus indicating one day too many.
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