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".
You might be looking at a feature request to specify longer periods. Otherwise the best that I can suggest is setting it to -30d, or setting it every month...