Asteria
Asteria is the personal stargazing assisant and web planetarium that helps you discover the best moments for stargazing and keeps you updated on the most beautiful sights in the night sky.
Asteria is a web application you can use straight from your browser, without needing to install anything. The app works on both your phone and tablet/laptop. If you’d like to add it to your home screen or app menu, you can do so by selecting Add to home screen or Install app from the browser’s menu.