Maneuvering of low Earth orbiting small spacecraft can be executed without propellant via atmospheric differential drag. This talk introduces analytical guidance solutions for short distance spacecraft re-phasing in circular or low eccentricity orbits, based on input shaping, linearized equations of motion, and use of differential drag. A Lyapunov based on-off controller is proposed to track the guidance in the case of a real flight. Simulation results show good promise for future onboard implementation.