Analyse in Excel and Date Format

Using "Analyse in Excel"  I do understand that we have to define measure to be able to sum values.

I didn't find any guidance on how to handle date.  Once in Excel, date member are like ordinary member and I cannot apply timeslicer on it.    Is that a limitation?   Is there an alternative?

Note:  In the power bi Desktop and Services, I use a date table linked to data.

Regards

Claude