The Calendar provides an option to change the first day of the week by using the firstDayOfWeek property. Generally, the day of the week starts from 0 (Sunday) and ends with 6 (Saturday).
By default, the first day of the week is culture specific.
The following example shows the Calendar with Tuesday as the first day of the week.
@Html.EJS().Calendar("element").FirstDayOfWeek(2).Render()