This guide is purely practical so all the DAX code in this publication can be tested through a .pbix file available for download. "90 Solved Cases on Time Intelligence in DAX" is a guide for users of Microsoft Power BI that provides solutions to very common practical cases in time intelligence models in the DAX language. To promote understanding and versatility of the DAX language, several parts were chosen to address the same case from different perspectives, using TIME INTELLIGENCE FUNCTIONS and combining them to find the best option for the model's needs. By applying the contents of this manual, users will be able to: - Use and combine TIME INTELLIGENCE FUNCTIONS in DAX language. - Write code using a refined syntax. - Acquire an agile development style. If you are interested in getting deeper into DAX programming, this guide will help you write code quickly and optimally.