This suggestion is add a css class to each anchor tag for each day, a unique css, like:
class='day20180213'.
with this we can make a css definition:
holydays.css
       day20180213 { background-color:red } // carnival
/* day YYYYmmDD */

this option has unlimited uses for any reason you want.

how it will works:
<td title="terça-feira, fevereiro 13, 2018" class="rcSelected" style=""><a class='day20180213' href="#">13</a></td>

Workaround 1) Use .resx files as the attached ones 

Workaround 2) Set properties to ViewState
        RadMonthYearPicker1.MonthYearNavigationSettings.ViewState["_mCancelButtonCaption"] = "my cancel";
        RadMonthYearPicker1.MonthYearNavigationSettings.ViewState["_mTodayButtonCaption"] = "my today";
        RadMonthYearPicker1.MonthYearNavigationSettings.ViewState["_mOkButtonCaption"] = "my ok";

while typing the time in the kendo timepicker there should display the suggestion same like as available in the silverlight. If there is any feature please let us know.
Kindly refer enclosed snapshot of silverlight application.

Open a demo page https://demos.telerik.com/aspnet-ajax/datetimepicker/overview/defaultcs.aspx?skin=Bootstrap and select Bootstrap skin. You will see that the right corners of the clock button are cutted down.

Workaround:
.RadPicker .rcSelect {
    border-top-right-radius: 4px !important;
    border-bottom-right-radius: 4px !important;
}

-> When DatePicker renders for the first time, it applies the CSS according to the selected skin.
Reference Image: Comtrol in Filter Panel first time render.jpg

-> But as soon as I enter into an edit mode or insert than the CSS is not applied to the control and the design of the RadCalender is breaking somehow.
Reference Image: Control while Editing.jpg

-> Also entering into edit or insert break the design of the other RadCalender control placed in filter panel.
Reference Image: Control in Filter Panel.jpg

When the culture is set using Thread.CurrentThread.CurrentUICulture = new CultureInfo("it");
The following exception is thrown
https://www.screencast.com/t/YnQstdBUrY

Hi,

I would like RadDatePicker to have DropDown Combo boxes for years and months like attached picture please.

Kind Regards,
Asaf

If it is possible, I'd like to be able to select the hour and minute individually from the same popup/dropdown.   
Currently, if you set the interval to anything less than 15 mins the list becomes far too big, imo, and forcing the list to scroll isn't always the most usable way to do things, especially if that list is particularly large (intervals of 5 mins or lower).

It would be really handy if the user could somehow choose the hour and minute separately before the popup/dropdown closes. This would minimise space used because you wouldn't need every instance of each hour/minute combination. You'd just need the hours displayed, and the minutes displayed.

RadDatePicker/RadDateTimePicker can not set different date than the current one in Win10 (IE11 and Edge) when Finnish and Norwegian culture is used.

Microsoft changed the Time separator for these cultures, it breaks not only our JavaScript parsing but the .NET parsing as well.
https://connect.microsoft.com/VisualStudio/Feedback/Details/1621722

The issue is fixed for Q3 2015 SP1. Internally we change the TimeSeparator used by the DateInput to ":" for cultures where it is the same as the DateSeparator. It will not affect the DateFormatString.

Currently we are migrating from ComponentArt controls to Telerik controls. We have replaced date picker with Telerik control. Now, as expected, we need the look, feel and behavior as same as previous one – to ensure the user friendliness. 

Below are few behaviors which we are looking forward in Telerik control. Please guide/assist us to achieve those.
• Type date manually in textbox and user should be able to change it using up and down arrow keys as well.
o In ComponentArt control I was able to edit every part of the date viz. dd, mm or yyyy individually when the focus is on individual part of date.
o If I press “J” then it will 1st select Jan if I press “J” again then it will select Jun if again then it will select Jul.
o If I press “11” then it will select “Nov” automatically or of I press “9” then it will select “Sep” automatically.
• Don't want user to key in null/blank values – these should be automatically validated by control.
• User should neither wipe out content of text box nor remove a single character from text box. If user presses unnecessary keys then ignore it.

We have just got issue with WCAG compatibility when applying for WCAG certification.
 The problem is that RadCalendar used for RadDatePicker has a strange behaviour when tabbing. We can't get focus to buttons (<<,<, >, >>)  that are in the header of the Calendar popup. We can successively navigate contemt of the Callendar -days of the month both with Tab and arrow keys (with EnableKeyboardNavigation="true"
 ) , but not to header buttons.
 We found nearly the same problem on Telerik demo: http://demos.telerik.com/aspnet-ajax/calendar/examples/functionality/keyboardnavigation/defaultcs.aspx

 Please look that Calendar at the top of the page does not allow select its header buttons. But the one in popup inside RadDatePicker can tab to its header buttons. 
 (however in strange way order is: days navigation inside Calendar1 by arrows, Tab- RadCalendar1, Tab- header of Callendar1 first button: <<)

An issue our clients have raised is that the Timeview popup only allows them to set a time in 30 minute intervals, this is not accurate enough when setting a schedule for an operation to occur.

Decreasing the time intervals displayed in the TimeView popup is not really viable as the popup would require a large screen area to display 24hrs in 5 minute intervals.

Please can you add additional controls to the TimeView popup to allow the user to accurately set the time. I have attached a screenshot of my current solution, when the timeview opens I set the manual entry controls to display the current time and using these controls the user can pick 1-12 for the hour, 0-59 for the minuters and AM/PM for the time of day, when clicking the SET button the timeview popup sets the time and closes.

I do feel that this would make a far more flexiable control.

Please vote

I have created a date user control using calendar extender. I have a textbox and calendar extender inside a DIV and its position set to relative and z-index is 1. When the page loads the datecontrol's popup is overlapped by the textbox of the second datecontrol. There is no problem with other controls. I have simple textboxes below that, but that is not overlapping. Please suggest a solution for me.

Hi. 
It would be very good to have an ability to disable autocorrect.