The "xlsread" function exhibits this behavior because Excel is storing the information internally as a "datenum". You can use "datestr" function to convert the date to the correct format after import.
For example:
>> datestr('12/21/16','mmm-dd')
ans =
Dec-21
For further information regarding "datestr" please refer the documentation at:
MATLAB Command: doc datestr
Web Link: http://www.mathworks.com/help/releases/R2015b/matlab/ref/datestr.html
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