| Title | 
                
                    Test
                    Find
                    
                    Pattern Title
                 | 
            
            
                | Expression | 
                ^((31(?! (FEB|APR|JUN|SEP|NOV)))|((30|29)(?! FEB))|(29(?= FEB (((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))|(0?[1-9])|1\d|2[0-8])-(JAN|FEB|MAR|MAY|APR|JUL|JUN|AUG|OCT|SEP|NOV|DEC)-((1[6-9]|[2-9]\d)\d{2})$  | 
            
            
                | Description | 
                Mathces in format DD-MON-YYYY (hyphen between results). Validates for leap years. Ensures month is in uppercase.  | 
            
            
                | Matches | 
                9-MAY-1981 | 29-FEB-2004 | 25-DEC-1999  | 
            
            
                | Non-Matches | 
                09 MAY 1981 | 06 Jul 2003  | 
            
            
                | Author | 
                
                    Rating:
                        
 
                    Rohan Pathare
                 | 
            
            
                | Source | 
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              | Your Rating | 
              
                
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	                Title: Too bad it doesn't work
	                Name: Ben Oshman
	                Date: 12/5/2008 4:00:27 PM
	                Comment: 
If only it would check for leap years, it would be perfect.
                
                
            
                
	                Title: Too bad it doesn't work
	                Name: Ben Oshman
	                Date: 12/5/2008 3:54:17 PM
	                Comment: 
If only it would check for leap years, it would be perfect.
                
                
            
                
	                Title: This expression does not work
	                Name: George
	                Date: 7/31/2008 11:34:47 AM
	                Comment: 
Did you test this? All dates are valid
31-FEB-2009 and more