Split CALWEEK to CALDAY

Hi Experts,

We have a requirement where use wants to split data from Calweek to CalDay.

The issue here is , There is no CALDAY in the Source.

Kindly suggest how to populate data in the cube considering the above scenario.

We have data available at CALMONTH and CALWEEK. also available for

FISCPER, fisc VARIANT is K4

With Regards,

Pearl