FYI, your 50-mm refractor telescope will help in observing the planets. You should not try and focus on a planet above 120x views though because of the size of your primary mirror, about 2-inches, 50x to 100x views will show various details for planets like Venus, Mars, Jupiter, and Saturn. Starry Night software, SkySafari, those applications allow you to set the sky view for your specific location and local time. Stellarium works well too, I use Starry Night and Stellarium. Here is the link for Stellarium 0.20.0, the latest version. It is freeware,
http://stellarium.org/