If you are in a geostationary orbit over longitude of 35˚ W, but actually need to be located at 35˚ E for the mission. Design a phasing maneuver that will enable the change in orbital position. Include the ΔVs required and the total 2 time required for this coplanar transfer. Oops….you have to go back to the Greenwich meridian. Design a phasing maneuver to finally get to the right location in geostationary orbit.