For many booking types, and many individuals, it makes sense to show the week starting on a Monday, not a Sunday. For my use case, splitting weekend bookings (which are often weekend-long single bookings) onto 2 different rows/weeks is confusing and hard to mentally track.

Please add a user preference for which day of the week to show as the left-hand-most day/column on the calendar, or as minimum to choose between Sunday or Monday.