SQL date math is always a joy... Currently this is how those numbers are calculated:
- Day: reviews since 0:00 UTC
- Week: reviews since 7 days prior to 0:00 UTC
- Month: reviews since 30 days prior to 0:00 UTC
This implies two things:
- week and month are rolling windows, while day is not
- week and month will usually cover slightly more than 7 and 30 days respectively
This doesn't matter if you're just trying to do a quick comparison between two reviewers, and it leaves the numbers immune from the vagaries of the daily cap since it still pins the window to 0:00 UTC - so I'm calling this by-design, but admitting that I'm open to requests to change it.