Date change at midnight - 26300st/Cal.2385

[Auragentum]

I would appreciate if those with ROCs and the 2385 movement could chime in here. I was watching the date change around midnight and noticed two things:

- Around 30 minutes before midnight the datewheel had started turning slightly into the next date (perhaps by 1/5). By Midnight it had turned slightly more (around 1/3).

- At 10 minutes past midnight it finally changed over to the next date in one quick "flip", just like on a Rolex.

Is this normal and within spec? My Rolexes flip over around 3-5 minutes past midnight and I was wondering if the same should be the case for APs. Looking forward to being "schooled"