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                    | 
                        Title | 
                    
                        Test
                        Details
                        
                        
                            Pattern Title
                        
                     | 
                
                
                    | 
                        Expression | 
                    
                         
                            ^((0?[13578]|10|12)(-|\/)(([1-9])|(0[1-9])|([12])([0-9]?)|(3[01]?))(-|\/)((19)([2-9])(\d{1})|(20)([01])(\d{1})|([8901])(\d{1}))|(0?[2469]|11)(-|\/)(([1-9])|(0[1-9])|([12])([0-9]?)|(3[0]?))(-|\/)((19)([2-9])(\d{1})|(20)([01])(\d{1})|([8901])(\d{1})))$
                         
                     | 
                
                
                    | 
                        Description | 
                    
                         improved date validation M/D/YY or M/D/YYYY or MM/DD/YYYY or MM/DD/YY: 1/1/1920 through 12/31/2019; Feb 29 and 30 always allowed, deal with it 
                     | 
                
                
                    | 
                        Matches | 
                    
                         1/2/03 | 02/30/1999 | 3/04/00 
                     | 
                
                
                    | 
                        Non-Matches | 
                    
                         3/4/2020 | 3/4/1919 | 4/31/2000 
                     | 
                
                
                    | 
                        Author | 
                    
                        Rating:
                            
 
                        
                            Brad Williams
                        
                     | 
                
            
        
    
        
        
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