I'm looking for the manual
Pull out to the "winder" to the first click. this is to change the date. The second click is to change the time.
Changing the date - rotating the winder (if you were looking at it) in a clockwise directions changes the major decimal - the number on the left e.g. 0, 1, 2, 3. Rotating anticlockwise changes the lesser decimal - the number on the right e.g. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Hope that helps.