Workday transport models are extensively used in practice to guide policy development while the more leisure-oriented weekend days are left out of the analysis. This is peculiar, as weekend travel can be as busy as workday travel, or even worse. Consequently, weekend travel behaviour is fundamentally different, showcasing more variability in the activities that people perform. Given this, can such a model be relevant for policy makers and does this outweigh the effort that is required to make such a model? These questions are investigated by thinking whether and how an operational workday transport model can be adapted to represent Saturday travel behaviour in an aggregate approach. Due to the lack of a clear starting point for model development, literature and travel data were used to propose a set of adaptations which can be used to transform a workday model. From this, two Saturday model versions were created which contain different trip purposes and Saturday travel data, whereby one of the models is improved in the trip generation component. The results show that adapting a model is feasible but more work is required for a proper implementation. Nevertheless, a Saturday model can be used in specific use cases but a clear purpose to regard Saturdays in policy development is still lacking. This research further recommends to explore the applicability of Saturday transport models and to conceptually develop a model which can portray complex aspects of travel behaviour in an Activity-Based approach.