Default [Q] Change the date on the Kindle Fire HD 7

I have a rooted Kindle Fire HD 7 and I was wondering if there is a way to change the date manually? I don't have the automatic button, so I can't uncheck that and also, the date and time are gray so I can't select those. The only thing I can do is change the time zone and that is not what I need. Any help would be greatly appreciated.