Change the week start setting for Front Calendar
Front Calendar defaults to using Sunday as the start of the week, but this may not be suitable for many users. You can update the calendar week start day to any day.
Click the gear icon on the top right of Front and into the Personal settings tab, then click on the Preferences section.
Under the Week Start setting, you can use the dropdown menu to pick the start of the week.
Click the Save button on the top right to save your changes. This is a personal setting that will only affect to your own Front Calendar.