Hi Stephen,
Users are commonly adding events one day off because of the event calendar starting on Monday instead of Sunday? It’s a EU v American thing.
I suppose this is a feature request to have a setting to determine this.

Evan McMahon
Hi Evan,
The plug-in uses the setting “Week Starts On” from Settings > General (It’s a WordPress configuration rather than the plug-in). However, WordPress does hide this setting if the value matches the locale’s default value.
So you can change the install’s locale or you can use the filter pre_option_start_of_week
(https://developer.wordpress.org/reference/hooks/pre_option_option/) to change that value.

Stephen Harris