Often you have to pull the crown out half way to change the date and pull it all the way out to change the time. Some older models require you to go around the dial past twelve o'clock twice for each day advancement. It is a pain to go around the hours and sometimes you fingers get sore but that is the worse case scenario. I have an old watch that I recently had to do that so I took a break after 15 days or so and continured later. I developed a small blister but it is a no brainer method.