Greetings Earthlings! Mars Sky is one of the very few apps designed for use on the surface of Mars. It's the "must-have" explorer's tool should you need the answer to any of the following questions: - What is the Martian date and time of the place where I crash landed? - Where is the Earth in the sky so I can send a distress call? - What is the direction of the Sun so I can find my way to the base? Even if you're still safe and sound on the Earth, Mars Sky can tell you if it's daylight where