I'm sure you're referring to the SOH
There are a couple of threads talking about this, just do a quick search. Anyway, my understanding is it does not matter where the date window is. Technically, it really doesn't depend on the mvmt or date wheel. More an asthetic design for the dial. However, if you are swapping an ETA to replace an asian clone, the date wheels are different. But, that is resolved cos it comes with the movement normally. Otherwise, not an issue.