Hi Jean,
Thank you for contacting Syncfusion Support,
We have prepared a sample with the SfDatePicker using the SelectorFormatString as "y/m/d" which denotes the YearMonthDay pattern. So according to SelectorFormatString, you can set the different pattern for the date. Kindly ensure the pattern in your side. Please download the sample from the following location:
Sample:
SfDatePicker_119594Please let us know if it helps you,
Regards,
Vijayalakshmi V.R