"Sleep outside under the stars and look for constellations and shooting stars."
There are several astronomical calendars for the celestial events online, for hobby astronomers. They give you information about things like lunar eclipses and meteor showers, which are, of course, something worth to stay up for.
Learn the constellations so that you can use the information given here, they give the different constellations are points of orientation, and if you don't know where Cassiopeia is, it might be hard to find the Perseids :-D
Based on The Witch of Lupine Hollow: 30 Ways to Live a More Magickal Life Everyday