Weekly report email arriving slow

Hello, I am getting my weekly report emails on a Tuesday. This feels very slow to me. For example, my last weekly report was for the period Feb 2 - Feb 8, and I got it today on Feb 10th. Why not at the start of Monday morning (i.e. Feb 9th)? Is this something technical within the system, or is the system waiting for me to complete something—like marking all habits as done/not done—before it sends the email?