Countrows for dates that match week start date

Hi

I have a facts table which is a daily snapshot of lots of rows of data. I also have my dates table (both shown below)

I am struggling to countrows of the facts table if the date added match the start of the week.

I am not interested if all the other dates fall into that week only if the date added match the start of the week.

The result I would expect from the data below would = 4 (4 x 02/11/2020)

thank you

Richard