Okay, hard to tell, move it through 180 degrees and it goes the other way.
Don't know where yours is sitting, in that 180 degrees so trial and error or a quartz timing machine. Long way is to move it clockwise 45 degrees (1/4 turn) note over a week if it got slower or faster and REMEMBER which way you turned it. If it goes slower, then a quarter turn back and another quarter turn back. Time again. If too fast on the first attempt back off 1/8 (22.5 degrees).
Clear as mud?