While most are aware of the two features of Journe’s QP that are quite unique is the 1) instantaneous 4 aperture change and the 2) crown only setting of the QP and hidden lug lever to toggle through the 48 months, what i did want to share that some may not be aware of is that the date change is “dragged” , meaning it may not happen exactly at midnight but could occur anywhere from 12:00 to 12:04? I haven’t followed each date change so not sure how much later it could trigger, but it is always instantaneous. 
Also, like other QPs, there isn’t a running second hand, so it is not something you do where you are counting down at midnight and NYE and hoping for a perfect instantaneous date change right at 12.