How to create a fiscal calendar?

Hi Team ,

Hope all are doing fine.

I have a requirement ., plz go through the below.

1. Need to create a Fiscal calender (From Feb - Jan)

2. Logic to create the Month

  Last week of the Month should be the 1st week of Fiscal calender month.

  Example: Fiscal Year - 2017 & 18

Please see the snap shot for reference.

3. We need to achieve the same in Tableau.

The same should be achieved for Years 2018 and 2019.

Please suggest.

Thanks