RadCalendar benefits from the ASP.NET AJAX framework to become an advanced date input control. Its feature list includes functionality like integrated date-picker, context menus, etc. RadCalendar has built-in AJAX support, which guarantees complete synchronization between client and server in the whole System.Globalization namespace. The AJAX mode also delivers the best combination of performance and compatibility with different culture settings. Developers have complete control over the appearance of the day matrix, as it is not hardcoded to the usual 7 x 6 mode. By setting the FirstDayOfWeek and the days x rows matrix you can format the number of rows/columns in a MonthView.