Many users prefer their calendar week to start on Sunday instead of Monday. Here's how you can make that change in Marvin:
Open the menu by clicking on the ☰ icon.
Select "Settings" from the menu.
Navigate to the "Date & Time" tab and look for the "Week Start" option.
Click on the dropdown menu and change the setting from Monday to Sunday.
After making this change, your calendar view and Week Scheduler will display the week from Sunday to Saturday.
Note: This setting doesn’t affect the Week Planner (Planning Ahead), where weeks always start on Monday.