3715 Chrono Rattrapante time/date issue

Hello Group!

I recently noticed that the date on my watch changes at 12 am, but the day changes at 3 am. Is that normal?

Regards,

Hi Dammann, Welcome to the forum.
You may have inadvertently used the quick-change mechanism near midnight. The day/date change wheels have been forced out of alignment causing them to change at different times. This won't affect the other functions of your watch but a complete service by IWC would be required to realign the wheels.
Leo