There are a lot of different ways to do the date window, but they all seem to fall into one of three basic approaches. First, you can simply treat it as another piece of information the watch is intended to deliver, in which case you make it large enough to be legible, put it at 3:00 as custom dictates, and think no more about it. The second is to treat it as a necessary evil – in a new version of a much loved vintage model that had no date, your marketing department tells you the watch will sell better with a date, so you put it in but try to make it as unobtrusive as possible (in which case it generally ends up looking apologetic as well as being aesthetically unsuccessful into the bargain).