This is a short post. It is like an FYI mail. Excel never understood any dates before 1900. We got used to that limitation over the decades. But Power BI does understand Dates before 1900. The best part is, you do not have to take any specific action. It just works.
Here is the raw data and the Power BI output.
If you try this in Excel, it just will not work. Now that you know this, starting using Power BI with Dates before 1900.
Mind you, the Power BI documentation says that the earliest limit is 1900. It still works for dates before 1900. Drill down is also supported. Here is the same data at Day level.
This ability may make historians and archeologists partially happy. There time scales are huge and Power BI does not support that much of a range. But still, it is an improvement worth knowing about.