I purchased this watch new in 2014 and haven’t given it the wrist time it deserves! I set it just now after reading the instruction manual carefully. Prohibited hours are between 1900 and 0100 so if you have the watch, be careful when setting! I forgot ho...
I have made it a habit to never set the date or other quick settings on all my watches during these times. It is easiest to have this rule on all of them so you never create any unnecessary problems.
I was considering trading it for a titanium IWC GST Perpetual. Very glad now I didn’t do so, especially since I have the stainless steel version of that watch! .