In general, a working week in Denmark is 37 hours divided between 5 days. Employees in Denmark are usually expected to complete the necessary amount of working hours from Monday to Friday between 06:00 and 18:00.
The question is, when do puppies open their eyes and start this process. The answer is somewhere between seven days to two weeks after birth. It varies a bit, based on breed and on the puppies themselves. When puppies open their eyes, this is just the first step in the beginning of other senses, including hearing.
Newborn kittens have sealed eyelids, which begin to open around eight days. It's not at all unusual for littermates to open their eyes at different rates -- some babies may open their eyes in as little as two days while others may take as long as two weeks. However, once open, their eyes will be blue and will gradually mature. Kittens will try to avoid light for two or three days after their eyes open because their pupils aren't able to constrict. The first three weeks of kitty's life she's especially dependent on her mother. Not only are her eyes not real useful, but her hearing isn't fully developed.