 The study presents a methodology for generating land cover change maps using landsat satellite data which involves addressing challenges such as backdating, maintaining high accuracies, and automating the process. The methodology includes a retrospective analysis to generate training and test data for historical periods lacking reference information, and results in overall accuracies of over 92% for all four maps. This article was authored by Juan Jose Vidal McEwer, a late Zabala, Miguel Niñarola, and others.