With a planisphere in your pack, during the night, you will ALWAYS know the where the cardinal directions are. As long as you make sure to never get lost, you will always generally know in what direction you need to go with this, without the aid of a compass. If you make it a habit to always look up and use a planisphere with dedication, you can quickly become so familiar with your direction/location on Earth in relation to the Heavens, that you should always and easily be able to navigate without depending on anything else.I would have liked a small pamphlet/book to accompany this with some quick instructions, etc. As seemingly easy to use and user friendly, I still have quite a few questions on its application. :o/