I have a friend of mine which is an extraterrestrial. She travels in a ship around the Milky Way. She was likely in the Solar System, and she wants to attend tomorrow New Year's Eve at Plaza del Sol in Madrid, Spain. Her last communication was that she had faced a violent cosmic ray storm, and she is inside the panic room aboard the ship. She cannot see outside to see where she is, and can only control the drive force, direction and use a very old fashioned radio receiver/transmitter. She doesn't want to arrive too late to tomorrow party and not too soon. The automatic guidance will control the ship correcting the course as if there would be no gravity (i.e., following as rectilinear path as possible) and she can only adjust the speed and direction of the travel. Currently, she had also lost the ability to calculate speed relative to any other point of reference. How can I help her?