EUMETSAT is operating a system of meteorological satellites (GEO and LEO) that observe Earth’s atmosphere and ocean and land surfaces—24 h a day, 365 days a year. The data and products are supplied to the National Meteorological Services of the Organisation’s Members and Cooperating States in Europe, as well as other users worldwide. The Satellites in-orbit deployment and operations are driven among others by the following conflicting constraints: In order to reduce the uncertainty and support with clear inputs the relevant decisions, specific space segment availability models (one for GEO, one for LEO) have been developed for defining the predictive requested launch dates, based on the behaviour of the different system elements. These behaviors are driven: The output of the GEO model is the “mission availability versus time” curve for the main Operational Services provided by the Meteosat satellites, namely the Full Disk Scanning Service (FDSS-FES) and Rapid Scanning Service (RSS). This information will allow an optimized management decision for the relevant mitigation actions proposed by the Operations Team, with the most efficient use/allocation of capital and resources, in order to ensure the mission continuity.