Omega 21032422001001, Руководство по эксплуатации, Страница: 29 / 44

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Perpetual calendar
Operating instructions 2
Í
The particularity of the Gregorian calendar is that one day (29th
February) is added to the year every four years to compensate for
the length of the solar year, which is 365.242192 days, or almost
365 1/4 days. Such years are called leap years and their number (for
example 1996) is divisible by 4.
As the compensation of one day every four years is too much, every
100 years (2100, 2200, …) the year is not a leap year, even though
it is divisible by four. However, even this is not totally sufficient,
since it leaves an error of one day every 400 years. Therefore, if the
number of the year is divisible by 400 it is a leap year, as was the
case with the year 2000. Because of this, the perpetual calendar of
your watch is set to function correctly until 2100.
Thermocompensation
This movement is 10 times more precise than a conventional quartz
movement thanks to an electronic module that compensates for the
effects of temperature on the movement’s operation.
The crown has 3 positions:
Watch functions:
1.1. Neutral position 1, normal when the watch is worn:
in this position, the crown ensures that the watch is water-
resistant.
1.2.
Setting the hands, minutes and seconds:
Pull the crown out to position 3 when the second hand is at 12
o’clock. The seconds hand will stop. Turn the crown forwards or
backwards to set the minute hand. Push the crown back into
position 1 to coincide with a given time.
Nb: To avoid inadvertently changing the date when setting
the time, it is important to always follow point 1.2 and then
point 1.3.
CAlIbrE 1680 (fig. V)
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