Hi Ric,
Thank you for your interest in Syncfusion products.
Query 1: is there a way to mark days in calendar?
Yes. By using the CellTemplateSelector we can edit the template of each cell in the SfCalendar control. We have prepared a sample to demonstrate the same. In the sample, we have added some dates to HolidayDates collection of Holiday class and using CellTemplateSelector we have set the CellTemplate. For more information on this, please refer the documentation link given below.
http://help.syncfusion.com/UG/winrt/index.html#!Documents/celltemplate.htmQuery 2: is there a way to remove the ",2015" from the Header?
We can customize the Header by using the HeaderTemplate property of SfCalendar. In the sample, we have set the HeaderTemplate and formatted the Date using CalendarHeaderFormater class.
Please find the sample in the following link.
Sample:
SfCalendar_119118.zipCould you please let us know if your requirements have been fulfilled and if you require further assistance on this.
Regards,
Bharadhi K