iwc DA VINCI AUTOMATIC 4523 Mode D'emploi page 20

Setting the time
Pull the crown to position 2. This will stop the movement.
To ensure that the set time is accurate to the second,
it is best to stop the movement as the seconds hand
reaches 60. You can now position the minute hand exactly
on the minute line. To start the seconds hand, push the
crown back to position 0. When setting the time, please
be aware that the date change always takes place at
midnight (24.00). If this change has already taken place
at 12.00 noon, you must move the hands forwards by
12 hours.