1. Adjustments of the perpetual
calendar and the moon phases (dial
side)
1.1 P
reparatory steps
Gently pull the winding crown at 4 o’clock out and
rotate the hands clockwise until the retrograde date
hand of the date display advances by one day. Then
set the hands to
6 a.m
. Now, actuate the corrector
button between 11 and 12 o’clock and repeat until
the retrograde date hand points to 1.
1.2 S
etting the leap year cycle (subsidiary dial
at 12 o’clock) and the month (subsidiary dial
at 3 o’clock)
In the program, the line marked “Leap year cycle”
gives you the Roman numeral that indicates the
year cycle. Leap years are identified with the Roman
numeral IV. Actuate the corrector button between
3 and 4 o’clock to first set the leap year display and
then the month display.
1.3 S
etting the date (retrograde date hand)
The date is set with the corrector button between 11
and 12 o’clock. You will note that the date hand and
the day of the week display advance simultaneously.
See the next step to correct the day of the week.
1.4 S
etting the day (subsidiary dial at 9 o’clock)
Actuate the corrector button between 6 and 7
o’clock to set the day of the week.
1.5
setting the moon phase (subsidiary dial at
6 o’clock)
Use the corrector button between 5 and 6 o’clock to
advance the hand until it points to the full moon. In
the program, the line marked “Moon age” tells you
how many times you have to actuate the corrector
button to obtain the correct moon age display.
2. Adjustments of the sky/moon
mechanism (sky side)
This mechanism is corrected with the second crown
at 8 o’clock on the 24-hour dial with the sky chart
facing up and the crown on the right-hand side.
Turning the crown clockwise corrects the sky chart
and sidereal time.
Turning it counterclockwise corrects the moon.
2.1 S
etting the moon and the moon phase
When the moon phase display indicates a full
moon, align the moon index with the meridian
(S). In the program, the line marked “Moon phase
revolution” tells you how many revolutions the
moon must perform to obtain the correct moon
phase display setting. Advance the moon index by
that number of revolutions.
In the program, the lines marked “Moon adjust-
ments” tells you the number of large and small divi-
sions by which you must advance the moon index.
This completes the moon setting procedure.
2.2 S
etting the sky
Align the sky index with the meridian (S). In the
program, the line marked “Sky adjustments” tells
you the number of large and small divisions by
which you must advance the sky index.
This completes the sky setting procedure.
