Designing for use within 30 degree to 50 degree northern ranges, it can be used regardless of the calendar year. Enjoy unhindered star gazing all year rounds Star Guide: This map provide astronomy enthusiasts a clear guide to learn about constellations, brights star,. Polishing your star gazing skills with this essential tool Easy to Use: Simply aligns the date and time, and this rotating star guide will show you overhead. It's user friendly and great for advanced astronomers and beginner alike Educational Tool: The star guide displays the locations of 100 star clusters, and galaxies. It's the good aid for observing these body through a or binoculars Great Telescopic Option: Whether you're using a binoculars, this star guide is a excellent accessory for your astronomical observations