Expose date filter's start & end date inside beast mode

The date range filter will always have a start and end date.

I would like Domo to expose that start date/end date inside a calculated field as variables.

My workaround is to have the same variable for fixed date ranges (MTD, YTD, etc)

This would not be the case if Domo exposed the date filter variables inside Beast Mode Editor (e.g. DATERANGE_START, DATERANGE_END)