You'll need to prep your data via an ETL to do this. You can pull in the calendar dimension dataset from the Domo Dimensions connector.

In the etl filter your calendar dataset to be after your first date in your dataset and exclude any dates in the future with a filter tile formula

`dt` >= DATE('2020-01-01') AND `dt` < CURRENT_DATE()

This will reduce the amount of records your ETL will need to process and make it run faster.

Then add a constant to your dataset and the filtered calender dataset with the value of 1.

Join these two datasets together on this new join column constant.

Feed the result into a filter and filter where the dt field from the calendar dataset is between your start and end date.

Then use a formula tile to calculate the work hours per day.

`work` / DATEDIFF(`plannedEndDate`, `plannedStart`)