Date format - Month Issue in Spanish

Hi All,

I need to display date in DD/MMM/YYYY format and its working fine in English.

But for Spanish(ES), it is showing the month in lower case. like 22/ago/2014 which is 22/Aug/2014 (in english).

Could any one please help me to get Spanish month upper case or first letter in upper case.

Thanks,
Chandra.