Raymond Weil Nabucco - Manual (Page 18)

18
GMT FUNCTION
To adjust the 24 hour hand (or the second time zone hand), pull
the crown out to position 3 and turn it away from you, clockwise,
until the hand indicates the exact time at your destination or your
home. Your watch continues to operate during this process and
therefore the time does not have to be reset.
After setting the time, always return the crown to position 2, and
then screw the crown down carefully to maintain your watch’s
water-resistance.
In the example below, the main time (22.07) corresponds to Geneva
time, and the GMT hand (06.07) shows the time in Sydney. The map
on pages 134 and 135 will familiarise you with the time zones.