Thanks for the help.
I've been messing with it quite a lot, and i think i have found the correct bit i need but it doesn't seem to be turning the date.
This is the first watch i've had like this, so just so i understand...
Unscrew the crown, then it pops itself out and charges or winds up the movement.
2nd little tiny tiny pull is for the date, which winding one way does nothing, winding the other i can hear clicking (which i think is what i heard yesterday when i did the date properly)
3rd and final pull is for the time.
What i've had to do, although i wish i didn't have to, is set the time to 11:59 or thereabouts and wait for the watch to go over past 12:00. Then if the date doesnt change wind it on 12 hours and wait again.
I'd rather not do it this way though...
If i popped the back cover off, is there an easy way to tell if something is wrong? Or loose?
Thank you for the reply