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                    | 
                        Title | 
                    
                        Test
                        Details
                        
                        
                            Pattern Title
                        
                     | 
                
                
                    | 
                        Expression | 
                    
                         
                            ^(((\d{4}((0[13578]|1[02])(0[1-9]|[12]\d|3[01])|(0[13456789]|1[012])(0[1-9]|[12]\d|30)|02(0[1-9]|1\d|2[0-8])))|((\d{2}[02468][048]|\d{2}[13579][26]))0229)){0,8}$
                         
                     | 
                
                
                    | 
                        Description | 
                    
                         Validates a date expression (or empty value) in CCYYMMDD format, checking a leap year from 00000101 A.D. to 99991231 
                     | 
                
                
                    | 
                        Matches | 
                    
                         20041231 | 20040229 
                     | 
                
                
                    | 
                        Non-Matches | 
                    
                         20043112 | 2003/04/02 
                     | 
                
                
                    | 
                        Author | 
                    
                        Rating:
                            
Not yet rated.
                        
                            Danny Garber
                        
                     | 
                
            
        
    
        
        
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