Oh we have a thread for times like this. --> http://forum.multitool.org/index.php/topic,45992.0.html
When you say two position,do you mean closed and open so you can set the time? It doesn't have the position to set just the date?
I have a couple of watches that are similar and I have found that on some of them you can somewhat fast forward the date by turning the crown past midnight to change it and then turn it back past 9 o'clock(or sometimes and then go forward again and the date will advance.