IWC Schaffhausen PORTUGIESER PERPETUAL CALENDAR Mode D'emploi page 33

Setting when crossing the International Date Line:
– When crossing the International Date Line in a westerly direc-
tion (you enter the next day, regardless of the time of day),
simply turn the time forwards to the new local time, and the
date change will take place automatically.
– When crossing the International Date Line in an easterly di-
rection (you enter the previous day, regardless of the time of
day), you must likewise set your watch forwards to the new
local time. However, your watch will now indicate the wrong
date (one day too many). This incorrect date indication can be
corrected by resetting the hands twice, by 12 hours on each
occasion:
– Setting the watch back by 12 hours during the afternoon
between 2 p.m. and 8 p.m. will prevent the calendar from
advancing at midnight.
– Setting the watch back another 12 hours the following morn-
ing between 2 a.m. and 11 a.m. will synchronize the date
display with the local date.
P O R T U G I E S E R P E R P E T U A L C A L E N D A R
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