I've read through the manual for my Giez GS1100 and I can't figure out how to change the day of the week. I know it sounds ridiculous that I can't change the day of the week on a watch. I have never came across a watch that is complicated as this Giez....I keep messing up and it's getting frustrating. I feel like I'm reading something out of a math book...Time and date is accurate.....can someone please tell me how to change the day of the week? Thanks!