How to implement "this week" or "this month" for charts and dashboard?

I know I can specify "-7d" but what I really want is "this week" not "over a week time period". This way charts start fresh on Monday. Similarly with "this month". I want from November 1 to now not October 26 to now.

Hard coding a start date is a solution. But it means constantly updating the dashboard. In the search docs I found "today" but not "this_month".