Date Format in dd MMM yyyy ----> (^(3[01]|[12][0-9]|0?[1-9])\s{1}(Jan|Mar|May|Jul|Aug|Oct|Dec)\s{1}((1[8-9]\d{2})|([2-9]\d{3}))$)|(^(30|[12][0-9]|0?[1-9])\s{1}(Apr|Jun|Sep|Nov)\s{1}((1[8-9]\d{2})|([2-9]\d{3}))$)|(^(2[0-8]|1[0-9]|0?[1-9])\s{1}(Feb)\s{1}((1[8-9]\d{2})|([2-9]\d{3}))$)|(^(29)\s{1}(Feb)\s{1}([2468][048]00)$)|(^(29)\s{1}(Feb)\s{1}([3579][26]00)$)|(^(29)\s{1}(Feb)\s{1}([1][89][0][48])$)|(^(29)\s{1}(Feb)\s{1}([2-9][0-9][0][48])$)|(^(29)\s{1}(Feb)\s{1}([1][89][2468][048])$)|(^(29)\s{1}(Feb)\s{1}([2-9][0-9][2468][048])$)|(^(29)\s{1}(Feb)\s{1}([1][89][13579][26])$)|(^(29)\s{1}(Feb)\s{1}([/])([2-9][0-9][13579][26])$) |
