The weekStarts property determines the first day of week. By default, the JavaScript Scheduler uses the "Auto" value which uses the weekStarts value of the current locale. You can use a number to set the first day of week explicitly.
"Auto"
const scheduler = new DayPilot.Scheduler("dp", { weekStarts: 0, // ... }); scheduler.init();
Event calendar/scheduling AJAX components. Available for JavaScript/HTML5/jQuery, ASP.NET, ASP.NET MVC. Build resource booking, project management, time tracking applications, personal and shared event calendars.