Time intelligence has been one of the most powerful features of Power BI from the beginning. But developers working against non-Gregorian calendars, such as a 445 fiscal calendar, ISO calendar, etc., have needed to exert extra effort to harness this power. That all changes with calendar-based time intelligence! This new feature removes the need to implement custom DAX patterns and allows all developers to utilize Power BI's time intelligence functions! In this session, we dive into how to setup calendars, how to access these calendars in DAX, and the performance benefits gained from using the new feature.